2005013980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2445139}}^1$

素因数の和:2445189

約数の個数: 24

約数和(自身を含む): 4313226960

約数和(自身を除く): 2308212980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2445139, 4890278, 9780556, 12225695, 24451390, 48902780, 100250699, 200501398, 401002796, 501253495, 1002506990, 2005013980]

約数ペア:

[(1, 2005013980), (2, 1002506990), (4, 501253495), (5, 401002796), (10, 200501398), (20, 100250699), (41, 48902780), (82, 24451390), (164, 12225695), (205, 9780556), (410, 4890278), (820, 2445139)]