87671780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{653}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 216063288

約数和(自身を除く): 128391508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 137, 140, 196, 245, 274, 490, 548, 653, 685, 959, 980, 1306, 1370, 1918, 2612, 2740, 3265, 3836, 4571, 4795, 6530, 6713, 9142, 9590, 13060, 13426, 18284, 19180, 22855, 26852, 31997, 33565, 45710, 63994, 67130, 89461, 91420, 127988, 134260, 159985, 178922, 319970, 357844, 447305, 626227, 639940, 894610, 1252454, 1789220, 2504908, 3131135, 4383589, 6262270, 8767178, 12524540, 17534356, 21917945, 43835890, 87671780]

約数ペア:

[(1, 87671780), (2, 43835890), (4, 21917945), (5, 17534356), (7, 12524540), (10, 8767178), (14, 6262270), (20, 4383589), (28, 3131135), (35, 2504908), (49, 1789220), (70, 1252454), (98, 894610), (137, 639940), (140, 626227), (196, 447305), (245, 357844), (274, 319970), (490, 178922), (548, 159985), (653, 134260), (685, 127988), (959, 91420), (980, 89461), (1306, 67130), (1370, 63994), (1918, 45710), (2612, 33565), (2740, 31997), (3265, 26852), (3836, 22855), (4571, 19180), (4795, 18284), (6530, 13426), (6713, 13060), (9142, 9590)]