399554820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:627

約数の個数: 216

約数和(自身を含む): 1428499800

約数和(自身を除く): 1028944980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 89, 90, 98, 105, 126, 140, 147, 178, 180, 196, 210, 245, 252, 267, 294, 315, 356, 420, 441, 445, 490, 509, 534, 588, 623, 630, 735, 801, 882, 890, 980, 1018, 1068, 1246, 1260, 1335, 1470, 1527, 1602, 1764, 1780, 1869, 2036, 2205, 2492, 2545, 2670, 2940, 3054, 3115, 3204, 3563, 3738, 4005, 4361, 4410, 4581, 5090, 5340, 5607, 6108, 6230, 7126, 7476, 7635, 8010, 8722, 8820, 9162, 9345, 10180, 10689, 11214, 12460, 13083, 14252, 15270, 16020, 17444, 17815, 18324, 18690, 21378, 21805, 22428, 22905, 24941, 26166, 28035, 30540, 32067, 35630, 37380, 39249, 42756, 43610, 45301, 45810, 49882, 52332, 53445, 56070, 64134, 65415, 71260, 74823, 78498, 87220, 90602, 91620, 99764, 106890, 112140, 124705, 128268, 130830, 135903, 149646, 156996, 160335, 181204, 196245, 213780, 224469, 226505, 249410, 261660, 271806, 299292, 317107, 320670, 374115, 392490, 407709, 448938, 453010, 498820, 543612, 634214, 641340, 679515, 748230, 784980, 815418, 897876, 906020, 951321, 1122345, 1268428, 1359030, 1496460, 1585535, 1630836, 1902642, 2038545, 2219749, 2244690, 2718060, 2853963, 3171070, 3805284, 4077090, 4439498, 4489380, 4756605, 5707926, 6342140, 6659247, 8154180, 8878996, 9513210, 11098745, 11415852, 13318494, 14269815, 19026420, 19977741, 22197490, 26636988, 28539630, 33296235, 39955482, 44394980, 57079260, 66592470, 79910964, 99888705, 133184940, 199777410, 399554820]

約数ペア:

[(1, 399554820), (2, 199777410), (3, 133184940), (4, 99888705), (5, 79910964), (6, 66592470), (7, 57079260), (9, 44394980), (10, 39955482), (12, 33296235), (14, 28539630), (15, 26636988), (18, 22197490), (20, 19977741), (21, 19026420), (28, 14269815), (30, 13318494), (35, 11415852), (36, 11098745), (42, 9513210), (45, 8878996), (49, 8154180), (60, 6659247), (63, 6342140), (70, 5707926), (84, 4756605), (89, 4489380), (90, 4439498), (98, 4077090), (105, 3805284), (126, 3171070), (140, 2853963), (147, 2718060), (178, 2244690), (180, 2219749), (196, 2038545), (210, 1902642), (245, 1630836), (252, 1585535), (267, 1496460), (294, 1359030), (315, 1268428), (356, 1122345), (420, 951321), (441, 906020), (445, 897876), (490, 815418), (509, 784980), (534, 748230), (588, 679515), (623, 641340), (630, 634214), (735, 543612), (801, 498820), (882, 453010), (890, 448938), (980, 407709), (1018, 392490), (1068, 374115), (1246, 320670), (1260, 317107), (1335, 299292), (1470, 271806), (1527, 261660), (1602, 249410), (1764, 226505), (1780, 224469), (1869, 213780), (2036, 196245), (2205, 181204), (2492, 160335), (2545, 156996), (2670, 149646), (2940, 135903), (3054, 130830), (3115, 128268), (3204, 124705), (3563, 112140), (3738, 106890), (4005, 99764), (4361, 91620), (4410, 90602), (4581, 87220), (5090, 78498), (5340, 74823), (5607, 71260), (6108, 65415), (6230, 64134), (7126, 56070), (7476, 53445), (7635, 52332), (8010, 49882), (8722, 45810), (8820, 45301), (9162, 43610), (9345, 42756), (10180, 39249), (10689, 37380), (11214, 35630), (12460, 32067), (13083, 30540), (14252, 28035), (15270, 26166), (16020, 24941), (17444, 22905), (17815, 22428), (18324, 21805), (18690, 21378)]