20366840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{739}}^1$

素因数の和:816

約数の個数: 64

約数和(自身を含む): 50349600

約数和(自身を除く): 29982760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 424, 520, 530, 689, 739, 1060, 1378, 1478, 2120, 2756, 2956, 3445, 3695, 5512, 5912, 6890, 7390, 9607, 13780, 14780, 19214, 27560, 29560, 38428, 39167, 48035, 76856, 78334, 96070, 156668, 192140, 195835, 313336, 384280, 391670, 509171, 783340, 1018342, 1566680, 2036684, 2545855, 4073368, 5091710, 10183420, 20366840]

約数ペア:

[(1, 20366840), (2, 10183420), (4, 5091710), (5, 4073368), (8, 2545855), (10, 2036684), (13, 1566680), (20, 1018342), (26, 783340), (40, 509171), (52, 391670), (53, 384280), (65, 313336), (104, 195835), (106, 192140), (130, 156668), (212, 96070), (260, 78334), (265, 76856), (424, 48035), (520, 39167), (530, 38428), (689, 29560), (739, 27560), (1060, 19214), (1378, 14780), (1478, 13780), (2120, 9607), (2756, 7390), (2956, 6890), (3445, 5912), (3695, 5512)]