21627655

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 10112249

約数列:

[1, 5, 7, 17, 35, 85, 119, 163, 223, 595, 815, 1115, 1141, 1561, 2771, 3791, 5705, 7805, 13855, 18955, 19397, 26537, 36349, 96985, 132685, 181745, 254443, 617933, 1272215, 3089665, 4325531, 21627655]

約数ペア:

[(1, 21627655), (5, 4325531), (7, 3089665), (17, 1272215), (35, 617933), (85, 254443), (119, 181745), (163, 132685), (223, 96985), (595, 36349), (815, 26537), (1115, 19397), (1141, 18955), (1561, 13855), (2771, 7805), (3791, 5705)]