219946640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{38723}}^1$

素因数の和:38807

約数の個数: 40

約数和(自身を含む): 518591808

約数和(自身を除く): 298645168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 38723, 77446, 154892, 193615, 309784, 387230, 619568, 774460, 1548920, 2749333, 3097840, 5498666, 10997332, 13746665, 21994664, 27493330, 43989328, 54986660, 109973320, 219946640]

約数ペア:

[(1, 219946640), (2, 109973320), (4, 54986660), (5, 43989328), (8, 27493330), (10, 21994664), (16, 13746665), (20, 10997332), (40, 5498666), (71, 3097840), (80, 2749333), (142, 1548920), (284, 774460), (355, 619568), (568, 387230), (710, 309784), (1136, 193615), (1420, 154892), (2840, 77446), (5680, 38723)]