20999929720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6818159}}^1$

素因数の和:6818188

約数の個数: 64

約数和(自身を含む): 58908902400

約数和(自身を除く): 37908972680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6818159, 13636318, 27272636, 34090795, 47727113, 54545272, 68181590, 74999749, 95454226, 136363180, 149999498, 190908452, 238635565, 272726360, 299998996, 374998745, 381816904, 477271130, 524998243, 599997992, 749997490, 954542260, 1049996486, 1499994980, 1909084520, 2099992972, 2624991215, 2999989960, 4199985944, 5249982430, 10499964860, 20999929720]

約数ペア:

[(1, 20999929720), (2, 10499964860), (4, 5249982430), (5, 4199985944), (7, 2999989960), (8, 2624991215), (10, 2099992972), (11, 1909084520), (14, 1499994980), (20, 1049996486), (22, 954542260), (28, 749997490), (35, 599997992), (40, 524998243), (44, 477271130), (55, 381816904), (56, 374998745), (70, 299998996), (77, 272726360), (88, 238635565), (110, 190908452), (140, 149999498), (154, 136363180), (220, 95454226), (280, 74999749), (308, 68181590), (385, 54545272), (440, 47727113), (616, 34090795), (770, 27272636), (1540, 13636318), (3080, 6818159)]