639650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1163}}^1$

素因数の和:1186

約数の個数: 24

約数和(自身を含む): 1299024

約数和(自身を除く): 659374

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 275, 550, 1163, 2326, 5815, 11630, 12793, 25586, 29075, 58150, 63965, 127930, 319825, 639650]

約数ペア:

[(1, 639650), (2, 319825), (5, 127930), (10, 63965), (11, 58150), (22, 29075), (25, 25586), (50, 12793), (55, 11630), (110, 5815), (275, 2326), (550, 1163)]