31261020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^5\times {\mathrm{31}}^1$

素因数の和:78

約数の個数: 144

約数和(自身を含む): 105412608

約数和(自身を除く): 74151588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 310, 343, 372, 420, 434, 465, 490, 588, 620, 651, 686, 735, 868, 930, 980, 1029, 1085, 1302, 1372, 1470, 1519, 1715, 1860, 2058, 2170, 2401, 2604, 2940, 3038, 3255, 3430, 4116, 4340, 4557, 4802, 5145, 6076, 6510, 6860, 7203, 7595, 9114, 9604, 10290, 10633, 12005, 13020, 14406, 15190, 16807, 18228, 20580, 21266, 22785, 24010, 28812, 30380, 31899, 33614, 36015, 42532, 45570, 48020, 50421, 53165, 63798, 67228, 72030, 74431, 84035, 91140, 100842, 106330, 127596, 144060, 148862, 159495, 168070, 201684, 212660, 223293, 252105, 297724, 318990, 336140, 372155, 446586, 504210, 521017, 637980, 744310, 893172, 1008420, 1042034, 1116465, 1488620, 1563051, 2084068, 2232930, 2605085, 3126102, 4465860, 5210170, 6252204, 7815255, 10420340, 15630510, 31261020]

約数ペア:

[(1, 31261020), (2, 15630510), (3, 10420340), (4, 7815255), (5, 6252204), (6, 5210170), (7, 4465860), (10, 3126102), (12, 2605085), (14, 2232930), (15, 2084068), (20, 1563051), (21, 1488620), (28, 1116465), (30, 1042034), (31, 1008420), (35, 893172), (42, 744310), (49, 637980), (60, 521017), (62, 504210), (70, 446586), (84, 372155), (93, 336140), (98, 318990), (105, 297724), (124, 252105), (140, 223293), (147, 212660), (155, 201684), (186, 168070), (196, 159495), (210, 148862), (217, 144060), (245, 127596), (294, 106330), (310, 100842), (343, 91140), (372, 84035), (420, 74431), (434, 72030), (465, 67228), (490, 63798), (588, 53165), (620, 50421), (651, 48020), (686, 45570), (735, 42532), (868, 36015), (930, 33614), (980, 31899), (1029, 30380), (1085, 28812), (1302, 24010), (1372, 22785), (1470, 21266), (1519, 20580), (1715, 18228), (1860, 16807), (2058, 15190), (2170, 14406), (2401, 13020), (2604, 12005), (2940, 10633), (3038, 10290), (3255, 9604), (3430, 9114), (4116, 7595), (4340, 7203), (4557, 6860), (4802, 6510), (5145, 6076)]