2040980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 4656960

約数和(自身を除く): 2615980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 131, 164, 190, 205, 262, 380, 410, 524, 655, 779, 820, 1310, 1558, 2489, 2620, 3116, 3895, 4978, 5371, 7790, 9956, 10742, 12445, 15580, 21484, 24890, 26855, 49780, 53710, 102049, 107420, 204098, 408196, 510245, 1020490, 2040980]

約数ペア:

[(1, 2040980), (2, 1020490), (4, 510245), (5, 408196), (10, 204098), (19, 107420), (20, 102049), (38, 53710), (41, 49780), (76, 26855), (82, 24890), (95, 21484), (131, 15580), (164, 12445), (190, 10742), (205, 9956), (262, 7790), (380, 5371), (410, 4978), (524, 3895), (655, 3116), (779, 2620), (820, 2489), (1310, 1558)]