1665820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 3880800

約数和(自身を除く): 2214980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 149, 172, 215, 260, 298, 430, 559, 596, 745, 860, 1118, 1490, 1937, 2236, 2795, 2980, 3874, 5590, 6407, 7748, 9685, 11180, 12814, 19370, 25628, 32035, 38740, 64070, 83291, 128140, 166582, 333164, 416455, 832910, 1665820]

約数ペア:

[(1, 1665820), (2, 832910), (4, 416455), (5, 333164), (10, 166582), (13, 128140), (20, 83291), (26, 64070), (43, 38740), (52, 32035), (65, 25628), (86, 19370), (130, 12814), (149, 11180), (172, 9685), (215, 7748), (260, 6407), (298, 5590), (430, 3874), (559, 2980), (596, 2795), (745, 2236), (860, 1937), (1118, 1490)]