31908980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 71184960

約数和(自身を除く): 39275980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 524, 641, 655, 1282, 1310, 2489, 2564, 2620, 3205, 4978, 6410, 9956, 12179, 12445, 12820, 24358, 24890, 48716, 49780, 60895, 83971, 121790, 167942, 243580, 335884, 419855, 839710, 1595449, 1679420, 3190898, 6381796, 7977245, 15954490, 31908980]

約数ペア:

[(1, 31908980), (2, 15954490), (4, 7977245), (5, 6381796), (10, 3190898), (19, 1679420), (20, 1595449), (38, 839710), (76, 419855), (95, 335884), (131, 243580), (190, 167942), (262, 121790), (380, 83971), (524, 60895), (641, 49780), (655, 48716), (1282, 24890), (1310, 24358), (2489, 12820), (2564, 12445), (2620, 12179), (3205, 9956), (4978, 6410)]