80624980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{641}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 179040960

約数和(自身を除く): 98415980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 331, 380, 641, 662, 1282, 1324, 1655, 2564, 3205, 3310, 6289, 6410, 6620, 12179, 12578, 12820, 24358, 25156, 31445, 48716, 60895, 62890, 121790, 125780, 212171, 243580, 424342, 848684, 1060855, 2121710, 4031249, 4243420, 8062498, 16124996, 20156245, 40312490, 80624980]

約数ペア:

[(1, 80624980), (2, 40312490), (4, 20156245), (5, 16124996), (10, 8062498), (19, 4243420), (20, 4031249), (38, 2121710), (76, 1060855), (95, 848684), (190, 424342), (331, 243580), (380, 212171), (641, 125780), (662, 121790), (1282, 62890), (1324, 60895), (1655, 48716), (2564, 31445), (3205, 25156), (3310, 24358), (6289, 12820), (6410, 12578), (6620, 12179)]