28756840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3313}}^1$

素因数の和:3362

約数の個数: 64

約数和(自身を含む): 76354560

約数和(自身を除く): 47597720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 3313, 4340, 6626, 8680, 13252, 16565, 23191, 26504, 33130, 46382, 66260, 92764, 102703, 115955, 132520, 185528, 205406, 231910, 410812, 463820, 513515, 718921, 821624, 927640, 1027030, 1437842, 2054060, 2875684, 3594605, 4108120, 5751368, 7189210, 14378420, 28756840]

約数ペア:

[(1, 28756840), (2, 14378420), (4, 7189210), (5, 5751368), (7, 4108120), (8, 3594605), (10, 2875684), (14, 2054060), (20, 1437842), (28, 1027030), (31, 927640), (35, 821624), (40, 718921), (56, 513515), (62, 463820), (70, 410812), (124, 231910), (140, 205406), (155, 185528), (217, 132520), (248, 115955), (280, 102703), (310, 92764), (434, 66260), (620, 46382), (868, 33130), (1085, 26504), (1240, 23191), (1736, 16565), (2170, 13252), (3313, 8680), (4340, 6626)]