1290640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:116

約数の個数: 80

約数和(自身を含む): 3468528

約数和(自身を除く): 2177888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 73, 80, 85, 104, 130, 136, 146, 170, 208, 221, 260, 272, 292, 340, 365, 442, 520, 584, 680, 730, 884, 949, 1040, 1105, 1168, 1241, 1360, 1460, 1768, 1898, 2210, 2482, 2920, 3536, 3796, 4420, 4745, 4964, 5840, 6205, 7592, 8840, 9490, 9928, 12410, 15184, 16133, 17680, 18980, 19856, 24820, 32266, 37960, 49640, 64532, 75920, 80665, 99280, 129064, 161330, 258128, 322660, 645320, 1290640]

約数ペア:

[(1, 1290640), (2, 645320), (4, 322660), (5, 258128), (8, 161330), (10, 129064), (13, 99280), (16, 80665), (17, 75920), (20, 64532), (26, 49640), (34, 37960), (40, 32266), (52, 24820), (65, 19856), (68, 18980), (73, 17680), (80, 16133), (85, 15184), (104, 12410), (130, 9928), (136, 9490), (146, 8840), (170, 7592), (208, 6205), (221, 5840), (260, 4964), (272, 4745), (292, 4420), (340, 3796), (365, 3536), (442, 2920), (520, 2482), (584, 2210), (680, 1898), (730, 1768), (884, 1460), (949, 1360), (1040, 1241), (1105, 1168)]