21687709840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1433}}^1\times {\mathrm{5113}}^1$

素因数の和:6596

約数の個数: 80

約数和(自身を含む): 51833008368

約数和(自身を除く): 30145298528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1433, 1480, 2866, 2960, 5113, 5732, 7165, 10226, 11464, 14330, 20452, 22928, 25565, 28660, 40904, 51130, 53021, 57320, 81808, 102260, 106042, 114640, 189181, 204520, 212084, 265105, 378362, 409040, 424168, 530210, 756724, 848336, 945905, 1060420, 1513448, 1891810, 2120840, 3026896, 3783620, 4241680, 7326929, 7567240, 14653858, 15134480, 29307716, 36634645, 58615432, 73269290, 117230864, 146538580, 271096373, 293077160, 542192746, 586154320, 1084385492, 1355481865, 2168770984, 2710963730, 4337541968, 5421927460, 10843854920, 21687709840]

約数ペア:

[(1, 21687709840), (2, 10843854920), (4, 5421927460), (5, 4337541968), (8, 2710963730), (10, 2168770984), (16, 1355481865), (20, 1084385492), (37, 586154320), (40, 542192746), (74, 293077160), (80, 271096373), (148, 146538580), (185, 117230864), (296, 73269290), (370, 58615432), (592, 36634645), (740, 29307716), (1433, 15134480), (1480, 14653858), (2866, 7567240), (2960, 7326929), (5113, 4241680), (5732, 3783620), (7165, 3026896), (10226, 2120840), (11464, 1891810), (14330, 1513448), (20452, 1060420), (22928, 945905), (25565, 848336), (28660, 756724), (40904, 530210), (51130, 424168), (53021, 409040), (57320, 378362), (81808, 265105), (102260, 212084), (106042, 204520), (114640, 189181)]