20124640

素因数分解:

$2^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1723}}^1$

素因数の和:1811

約数の個数: 48

約数和(自身を含む): 48223728

約数和(自身を除く): 28099088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 73, 80, 146, 160, 292, 365, 584, 730, 1168, 1460, 1723, 2336, 2920, 3446, 5840, 6892, 8615, 11680, 13784, 17230, 27568, 34460, 55136, 68920, 125779, 137840, 251558, 275680, 503116, 628895, 1006232, 1257790, 2012464, 2515580, 4024928, 5031160, 10062320, 20124640]

約数ペア:

[(1, 20124640), (2, 10062320), (4, 5031160), (5, 4024928), (8, 2515580), (10, 2012464), (16, 1257790), (20, 1006232), (32, 628895), (40, 503116), (73, 275680), (80, 251558), (146, 137840), (160, 125779), (292, 68920), (365, 55136), (584, 34460), (730, 27568), (1168, 17230), (1460, 13784), (1723, 11680), (2336, 8615), (2920, 6892), (3446, 5840)]