20404960

素因数分解:

$2^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1747}}^1$

素因数の和:1835

約数の個数: 48

約数和(自身を含む): 48895056

約数和(自身を除く): 28490096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 73, 80, 146, 160, 292, 365, 584, 730, 1168, 1460, 1747, 2336, 2920, 3494, 5840, 6988, 8735, 11680, 13976, 17470, 27952, 34940, 55904, 69880, 127531, 139760, 255062, 279520, 510124, 637655, 1020248, 1275310, 2040496, 2550620, 4080992, 5101240, 10202480, 20404960]

約数ペア:

[(1, 20404960), (2, 10202480), (4, 5101240), (5, 4080992), (8, 2550620), (10, 2040496), (16, 1275310), (20, 1020248), (32, 637655), (40, 510124), (73, 279520), (80, 255062), (146, 139760), (160, 127531), (292, 69880), (365, 55904), (584, 34940), (730, 27952), (1168, 17470), (1460, 13976), (1747, 11680), (2336, 8735), (2920, 6988), (3494, 5840)]