21366640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14057}}^1$

素因数の和:14089

約数の個数: 40

約数和(自身を含む): 52295760

約数和(自身を除く): 30929120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14057, 28114, 56228, 70285, 112456, 140570, 224912, 267083, 281140, 534166, 562280, 1068332, 1124560, 1335415, 2136664, 2670830, 4273328, 5341660, 10683320, 21366640]

約数ペア:

[(1, 21366640), (2, 10683320), (4, 5341660), (5, 4273328), (8, 2670830), (10, 2136664), (16, 1335415), (19, 1124560), (20, 1068332), (38, 562280), (40, 534166), (76, 281140), (80, 267083), (95, 224912), (152, 140570), (190, 112456), (304, 70285), (380, 56228), (760, 28114), (1520, 14057)]