1277771560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{821}}^1$

素因数の和:959

約数の個数: 128

約数和(自身を含む): 3219017760

約数和(自身を除く): 1941246200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 73, 82, 104, 130, 146, 164, 205, 260, 292, 328, 365, 410, 520, 533, 584, 730, 820, 821, 949, 1066, 1460, 1640, 1642, 1898, 2132, 2665, 2920, 2993, 3284, 3796, 4105, 4264, 4745, 5330, 5986, 6568, 7592, 8210, 9490, 10660, 10673, 11972, 14965, 16420, 18980, 21320, 21346, 23944, 29930, 32840, 33661, 37960, 38909, 42692, 53365, 59860, 59933, 67322, 77818, 85384, 106730, 119720, 119866, 134644, 155636, 168305, 194545, 213460, 239732, 269288, 299665, 311272, 336610, 389090, 426920, 437593, 479464, 599330, 673220, 778180, 779129, 875186, 1198660, 1346440, 1556360, 1558258, 1750372, 2187965, 2397320, 2457253, 3116516, 3500744, 3895645, 4375930, 4914506, 6233032, 7791290, 8751860, 9829012, 12286265, 15582580, 17503720, 19658024, 24572530, 31165160, 31944289, 49145060, 63888578, 98290120, 127777156, 159721445, 255554312, 319442890, 638885780, 1277771560]

約数ペア:

[(1, 1277771560), (2, 638885780), (4, 319442890), (5, 255554312), (8, 159721445), (10, 127777156), (13, 98290120), (20, 63888578), (26, 49145060), (40, 31944289), (41, 31165160), (52, 24572530), (65, 19658024), (73, 17503720), (82, 15582580), (104, 12286265), (130, 9829012), (146, 8751860), (164, 7791290), (205, 6233032), (260, 4914506), (292, 4375930), (328, 3895645), (365, 3500744), (410, 3116516), (520, 2457253), (533, 2397320), (584, 2187965), (730, 1750372), (820, 1558258), (821, 1556360), (949, 1346440), (1066, 1198660), (1460, 875186), (1640, 779129), (1642, 778180), (1898, 673220), (2132, 599330), (2665, 479464), (2920, 437593), (2993, 426920), (3284, 389090), (3796, 336610), (4105, 311272), (4264, 299665), (4745, 269288), (5330, 239732), (5986, 213460), (6568, 194545), (7592, 168305), (8210, 155636), (9490, 134644), (10660, 119866), (10673, 119720), (11972, 106730), (14965, 85384), (16420, 77818), (18980, 67322), (21320, 59933), (21346, 59860), (23944, 53365), (29930, 42692), (32840, 38909), (33661, 37960)]