28706920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1231}}^1$

素因数の和:1306

約数の個数: 64

約数和(自身を含む): 71850240

約数和(自身を除く): 43143320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 88, 106, 110, 212, 220, 265, 424, 440, 530, 583, 1060, 1166, 1231, 2120, 2332, 2462, 2915, 4664, 4924, 5830, 6155, 9848, 11660, 12310, 13541, 23320, 24620, 27082, 49240, 54164, 65243, 67705, 108328, 130486, 135410, 260972, 270820, 326215, 521944, 541640, 652430, 717673, 1304860, 1435346, 2609720, 2870692, 3588365, 5741384, 7176730, 14353460, 28706920]

約数ペア:

[(1, 28706920), (2, 14353460), (4, 7176730), (5, 5741384), (8, 3588365), (10, 2870692), (11, 2609720), (20, 1435346), (22, 1304860), (40, 717673), (44, 652430), (53, 541640), (55, 521944), (88, 326215), (106, 270820), (110, 260972), (212, 135410), (220, 130486), (265, 108328), (424, 67705), (440, 65243), (530, 54164), (583, 49240), (1060, 27082), (1166, 24620), (1231, 23320), (2120, 13541), (2332, 12310), (2462, 11660), (2915, 9848), (4664, 6155), (4924, 5830)]