18738760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1621}}^1$

素因数の和:1666

約数の個数: 48

約数和(自身を含む): 44815860

約数和(自身を除く): 26077100

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1621, 2312, 2890, 3242, 5780, 6484, 8105, 11560, 12968, 16210, 27557, 32420, 55114, 64840, 110228, 137785, 220456, 275570, 468469, 551140, 936938, 1102280, 1873876, 2342345, 3747752, 4684690, 9369380, 18738760]

約数ペア:

[(1, 18738760), (2, 9369380), (4, 4684690), (5, 3747752), (8, 2342345), (10, 1873876), (17, 1102280), (20, 936938), (34, 551140), (40, 468469), (68, 275570), (85, 220456), (136, 137785), (170, 110228), (289, 64840), (340, 55114), (578, 32420), (680, 27557), (1156, 16210), (1445, 12968), (1621, 11560), (2312, 8105), (2890, 6484), (3242, 5780)]