21229740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 216

約数和(自身を含む): 78427440

約数和(自身を除く): 57197700

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 49, 58, 60, 63, 70, 83, 84, 87, 90, 98, 105, 116, 126, 140, 145, 147, 166, 174, 180, 196, 203, 210, 245, 249, 252, 261, 290, 294, 315, 332, 348, 406, 415, 420, 435, 441, 490, 498, 522, 580, 581, 588, 609, 630, 735, 747, 812, 830, 870, 882, 980, 996, 1015, 1044, 1162, 1218, 1245, 1260, 1305, 1421, 1470, 1494, 1660, 1740, 1743, 1764, 1827, 2030, 2205, 2324, 2407, 2436, 2490, 2610, 2842, 2905, 2940, 2988, 3045, 3486, 3654, 3735, 4060, 4067, 4263, 4410, 4814, 4980, 5220, 5229, 5684, 5810, 6090, 6972, 7105, 7221, 7308, 7470, 8134, 8526, 8715, 8820, 9135, 9628, 10458, 11620, 12035, 12180, 12201, 12789, 14210, 14442, 14940, 16268, 16849, 17052, 17430, 18270, 20335, 20916, 21315, 21663, 24070, 24402, 25578, 26145, 28420, 28884, 33698, 34860, 36105, 36540, 36603, 40670, 42630, 43326, 48140, 48804, 50547, 51156, 52290, 61005, 63945, 67396, 72210, 73206, 81340, 84245, 85260, 86652, 101094, 104580, 108315, 117943, 122010, 127890, 144420, 146412, 151641, 168490, 183015, 202188, 216630, 235886, 244020, 252735, 255780, 303282, 336980, 353829, 366030, 433260, 471772, 505470, 589715, 606564, 707658, 732060, 758205, 1010940, 1061487, 1179430, 1415316, 1516410, 1769145, 2122974, 2358860, 3032820, 3538290, 4245948, 5307435, 7076580, 10614870, 21229740]

約数ペア:

[(1, 21229740), (2, 10614870), (3, 7076580), (4, 5307435), (5, 4245948), (6, 3538290), (7, 3032820), (9, 2358860), (10, 2122974), (12, 1769145), (14, 1516410), (15, 1415316), (18, 1179430), (20, 1061487), (21, 1010940), (28, 758205), (29, 732060), (30, 707658), (35, 606564), (36, 589715), (42, 505470), (45, 471772), (49, 433260), (58, 366030), (60, 353829), (63, 336980), (70, 303282), (83, 255780), (84, 252735), (87, 244020), (90, 235886), (98, 216630), (105, 202188), (116, 183015), (126, 168490), (140, 151641), (145, 146412), (147, 144420), (166, 127890), (174, 122010), (180, 117943), (196, 108315), (203, 104580), (210, 101094), (245, 86652), (249, 85260), (252, 84245), (261, 81340), (290, 73206), (294, 72210), (315, 67396), (332, 63945), (348, 61005), (406, 52290), (415, 51156), (420, 50547), (435, 48804), (441, 48140), (490, 43326), (498, 42630), (522, 40670), (580, 36603), (581, 36540), (588, 36105), (609, 34860), (630, 33698), (735, 28884), (747, 28420), (812, 26145), (830, 25578), (870, 24402), (882, 24070), (980, 21663), (996, 21315), (1015, 20916), (1044, 20335), (1162, 18270), (1218, 17430), (1245, 17052), (1260, 16849), (1305, 16268), (1421, 14940), (1470, 14442), (1494, 14210), (1660, 12789), (1740, 12201), (1743, 12180), (1764, 12035), (1827, 11620), (2030, 10458), (2205, 9628), (2324, 9135), (2407, 8820), (2436, 8715), (2490, 8526), (2610, 8134), (2842, 7470), (2905, 7308), (2940, 7221), (2988, 7105), (3045, 6972), (3486, 6090), (3654, 5810), (3735, 5684), (4060, 5229), (4067, 5220), (4263, 4980), (4410, 4814)]