20454940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{853}}^1$

素因数の和:982

約数の個数: 48

約数和(自身を含む): 47345760

約数和(自身を除く): 26890820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 853, 1090, 1199, 1706, 2180, 2398, 3412, 4265, 4796, 5995, 8530, 9383, 11990, 17060, 18766, 23980, 37532, 46915, 92977, 93830, 185954, 187660, 371908, 464885, 929770, 1022747, 1859540, 2045494, 4090988, 5113735, 10227470, 20454940]

約数ペア:

[(1, 20454940), (2, 10227470), (4, 5113735), (5, 4090988), (10, 2045494), (11, 1859540), (20, 1022747), (22, 929770), (44, 464885), (55, 371908), (109, 187660), (110, 185954), (218, 93830), (220, 92977), (436, 46915), (545, 37532), (853, 23980), (1090, 18766), (1199, 17060), (1706, 11990), (2180, 9383), (2398, 8530), (3412, 5995), (4265, 4796)]