28758760

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{1091}}^1$

素因数の和:1761

約数の個数: 32

約数和(自身を含む): 64864800

約数和(自身を除く): 36106040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 1091, 1318, 2182, 2636, 3295, 4364, 5272, 5455, 6590, 8728, 10910, 13180, 21820, 26360, 43640, 718969, 1437938, 2875876, 3594845, 5751752, 7189690, 14379380, 28758760]

約数ペア:

[(1, 28758760), (2, 14379380), (4, 7189690), (5, 5751752), (8, 3594845), (10, 2875876), (20, 1437938), (40, 718969), (659, 43640), (1091, 26360), (1318, 21820), (2182, 13180), (2636, 10910), (3295, 8728), (4364, 6590), (5272, 5455)]