31478580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:155

約数の個数: 216

約数和(自身を含む): 115026912

約数和(自身を除く): 83548332

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 43, 45, 49, 60, 63, 70, 83, 84, 86, 90, 98, 105, 126, 129, 140, 147, 166, 172, 180, 196, 210, 215, 245, 249, 252, 258, 294, 301, 315, 332, 387, 415, 420, 430, 441, 490, 498, 516, 581, 588, 602, 630, 645, 735, 747, 774, 830, 860, 882, 903, 980, 996, 1162, 1204, 1245, 1260, 1290, 1470, 1494, 1505, 1548, 1660, 1743, 1764, 1806, 1935, 2107, 2205, 2324, 2490, 2580, 2709, 2905, 2940, 2988, 3010, 3486, 3569, 3612, 3735, 3870, 4067, 4214, 4410, 4515, 4980, 5229, 5418, 5810, 6020, 6321, 6972, 7138, 7470, 7740, 8134, 8428, 8715, 8820, 9030, 10458, 10535, 10707, 10836, 11620, 12201, 12642, 13545, 14276, 14940, 16268, 17430, 17845, 18060, 18963, 20335, 20916, 21070, 21414, 24402, 24983, 25284, 26145, 27090, 31605, 32121, 34860, 35690, 36603, 37926, 40670, 42140, 42828, 48804, 49966, 52290, 53535, 54180, 61005, 63210, 64242, 71380, 73206, 74949, 75852, 81340, 94815, 99932, 104580, 107070, 122010, 124915, 126420, 128484, 146412, 149898, 160605, 174881, 183015, 189630, 214140, 224847, 244020, 249830, 299796, 321210, 349762, 366030, 374745, 379260, 449694, 499660, 524643, 642420, 699524, 732060, 749490, 874405, 899388, 1049286, 1124235, 1498980, 1573929, 1748810, 2098572, 2248470, 2623215, 3147858, 3497620, 4496940, 5246430, 6295716, 7869645, 10492860, 15739290, 31478580]

約数ペア:

[(1, 31478580), (2, 15739290), (3, 10492860), (4, 7869645), (5, 6295716), (6, 5246430), (7, 4496940), (9, 3497620), (10, 3147858), (12, 2623215), (14, 2248470), (15, 2098572), (18, 1748810), (20, 1573929), (21, 1498980), (28, 1124235), (30, 1049286), (35, 899388), (36, 874405), (42, 749490), (43, 732060), (45, 699524), (49, 642420), (60, 524643), (63, 499660), (70, 449694), (83, 379260), (84, 374745), (86, 366030), (90, 349762), (98, 321210), (105, 299796), (126, 249830), (129, 244020), (140, 224847), (147, 214140), (166, 189630), (172, 183015), (180, 174881), (196, 160605), (210, 149898), (215, 146412), (245, 128484), (249, 126420), (252, 124915), (258, 122010), (294, 107070), (301, 104580), (315, 99932), (332, 94815), (387, 81340), (415, 75852), (420, 74949), (430, 73206), (441, 71380), (490, 64242), (498, 63210), (516, 61005), (581, 54180), (588, 53535), (602, 52290), (630, 49966), (645, 48804), (735, 42828), (747, 42140), (774, 40670), (830, 37926), (860, 36603), (882, 35690), (903, 34860), (980, 32121), (996, 31605), (1162, 27090), (1204, 26145), (1245, 25284), (1260, 24983), (1290, 24402), (1470, 21414), (1494, 21070), (1505, 20916), (1548, 20335), (1660, 18963), (1743, 18060), (1764, 17845), (1806, 17430), (1935, 16268), (2107, 14940), (2205, 14276), (2324, 13545), (2490, 12642), (2580, 12201), (2709, 11620), (2905, 10836), (2940, 10707), (2988, 10535), (3010, 10458), (3486, 9030), (3569, 8820), (3612, 8715), (3735, 8428), (3870, 8134), (4067, 7740), (4214, 7470), (4410, 7138), (4515, 6972), (4980, 6321), (5229, 6020), (5418, 5810)]