278320120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1721}}^1$

素因数の和:2056

約数の個数: 64

約数和(自身を含む): 676952640

約数和(自身を除く): 398632520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 311, 520, 622, 1244, 1555, 1721, 2488, 3110, 3442, 4043, 6220, 6884, 8086, 8605, 12440, 13768, 16172, 17210, 20215, 22373, 32344, 34420, 40430, 44746, 68840, 80860, 89492, 111865, 161720, 178984, 223730, 447460, 535231, 894920, 1070462, 2140924, 2676155, 4281848, 5352310, 6958003, 10704620, 13916006, 21409240, 27832012, 34790015, 55664024, 69580030, 139160060, 278320120]

約数ペア:

[(1, 278320120), (2, 139160060), (4, 69580030), (5, 55664024), (8, 34790015), (10, 27832012), (13, 21409240), (20, 13916006), (26, 10704620), (40, 6958003), (52, 5352310), (65, 4281848), (104, 2676155), (130, 2140924), (260, 1070462), (311, 894920), (520, 535231), (622, 447460), (1244, 223730), (1555, 178984), (1721, 161720), (2488, 111865), (3110, 89492), (3442, 80860), (4043, 68840), (6220, 44746), (6884, 40430), (8086, 34420), (8605, 32344), (12440, 22373), (13768, 20215), (16172, 17210)]