21872980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35279}}^1$

素因数の和:35319

約数の個数: 24

約数和(自身を含む): 47416320

約数和(自身を除く): 25543340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35279, 70558, 141116, 176395, 352790, 705580, 1093649, 2187298, 4374596, 5468245, 10936490, 21872980]

約数ペア:

[(1, 21872980), (2, 10936490), (4, 5468245), (5, 4374596), (10, 2187298), (20, 1093649), (31, 705580), (62, 352790), (124, 176395), (155, 141116), (310, 70558), (620, 35279)]