220423640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{177761}}^1$

素因数の和:177803

約数の個数: 32

約数和(自身を含む): 511954560

約数和(自身を除く): 291530920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 177761, 355522, 711044, 888805, 1422088, 1777610, 3555220, 5510591, 7110440, 11021182, 22042364, 27552955, 44084728, 55105910, 110211820, 220423640]

約数ペア:

[(1, 220423640), (2, 110211820), (4, 55105910), (5, 44084728), (8, 27552955), (10, 22042364), (20, 11021182), (31, 7110440), (40, 5510591), (62, 3555220), (124, 1777610), (155, 1422088), (248, 888805), (310, 711044), (620, 355522), (1240, 177761)]