20467980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8747}}^1$

素因数の和:8775

約数の個数: 72

約数和(自身を含む): 66869712

約数和(自身を除く): 46401732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8747, 17494, 26241, 34988, 43735, 52482, 78723, 87470, 104964, 113711, 131205, 157446, 174940, 227422, 262410, 314892, 341133, 393615, 454844, 524820, 568555, 682266, 787230, 1023399, 1137110, 1364532, 1574460, 1705665, 2046798, 2274220, 3411330, 4093596, 5116995, 6822660, 10233990, 20467980]

約数ペア:

[(1, 20467980), (2, 10233990), (3, 6822660), (4, 5116995), (5, 4093596), (6, 3411330), (9, 2274220), (10, 2046798), (12, 1705665), (13, 1574460), (15, 1364532), (18, 1137110), (20, 1023399), (26, 787230), (30, 682266), (36, 568555), (39, 524820), (45, 454844), (52, 393615), (60, 341133), (65, 314892), (78, 262410), (90, 227422), (117, 174940), (130, 157446), (156, 131205), (180, 113711), (195, 104964), (234, 87470), (260, 78723), (390, 52482), (468, 43735), (585, 34988), (780, 26241), (1170, 17494), (2340, 8747)]