20955556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{2677}}^1$

素因数の和:2803

約数の個数: 24

約数和(自身を含む): 38991680

約数和(自身を除く): 18036124

約数列:

[1, 2, 4, 19, 38, 76, 103, 206, 412, 1957, 2677, 3914, 5354, 7828, 10708, 50863, 101726, 203452, 275731, 551462, 1102924, 5238889, 10477778, 20955556]

約数ペア:

[(1, 20955556), (2, 10477778), (4, 5238889), (19, 1102924), (38, 551462), (76, 275731), (103, 203452), (206, 101726), (412, 50863), (1957, 10708), (2677, 7828), (3914, 5354)]