20927960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7369}}^1$

素因数の和:7451

約数の個数: 32

約数和(自身を含む): 47757600

約数和(自身を除く): 26829640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7369, 14738, 29476, 36845, 58952, 73690, 147380, 294760, 523199, 1046398, 2092796, 2615995, 4185592, 5231990, 10463980, 20927960]

約数ペア:

[(1, 20927960), (2, 10463980), (4, 5231990), (5, 4185592), (8, 2615995), (10, 2092796), (20, 1046398), (40, 523199), (71, 294760), (142, 147380), (284, 73690), (355, 58952), (568, 36845), (710, 29476), (1420, 14738), (2840, 7369)]