18738940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4483}}^1$

素因数の和:4522

約数の個数: 48

約数和(自身を含む): 45198720

約数和(自身を除く): 26459780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4483, 8966, 17932, 22415, 44830, 49313, 85177, 89660, 98626, 170354, 197252, 246565, 340708, 425885, 493130, 851770, 936947, 986260, 1703540, 1873894, 3747788, 4684735, 9369470, 18738940]

約数ペア:

[(1, 18738940), (2, 9369470), (4, 4684735), (5, 3747788), (10, 1873894), (11, 1703540), (19, 986260), (20, 936947), (22, 851770), (38, 493130), (44, 425885), (55, 340708), (76, 246565), (95, 197252), (110, 170354), (190, 98626), (209, 89660), (220, 85177), (380, 49313), (418, 44830), (836, 22415), (1045, 17932), (2090, 8966), (4180, 4483)]