18764560

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1439}}^1$

素因数の和:1615

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 25161200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1439, 1630, 2608, 2878, 3260, 5756, 6520, 7195, 11512, 13040, 14390, 23024, 28780, 57560, 115120, 234557, 469114, 938228, 1172785, 1876456, 2345570, 3752912, 4691140, 9382280, 18764560]

約数ペア:

[(1, 18764560), (2, 9382280), (4, 4691140), (5, 3752912), (8, 2345570), (10, 1876456), (16, 1172785), (20, 938228), (40, 469114), (80, 234557), (163, 115120), (326, 57560), (652, 28780), (815, 23024), (1304, 14390), (1439, 13040), (1630, 11512), (2608, 7195), (2878, 6520), (3260, 5756)]