401024980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{328709}}^1$

素因数の和:328779

約数の個数: 24

約数和(自身を含む): 855960840

約数和(自身を除く): 454935860

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 328709, 657418, 1314836, 1643545, 3287090, 6574180, 20051249, 40102498, 80204996, 100256245, 200512490, 401024980]

約数ペア:

[(1, 401024980), (2, 200512490), (4, 100256245), (5, 80204996), (10, 40102498), (20, 20051249), (61, 6574180), (122, 3287090), (244, 1643545), (305, 1314836), (610, 657418), (1220, 328709)]