21407535

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{283}}^1$

素因数の和:376

約数の個数: 36

約数和(自身を含む): 38167896

約数和(自身を除く): 16760361

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 283, 369, 615, 849, 1415, 1681, 1845, 2547, 4245, 5043, 8405, 11603, 12735, 15129, 25215, 34809, 58015, 75645, 104427, 174045, 475723, 522135, 1427169, 2378615, 4281507, 7135845, 21407535]

約数ペア:

[(1, 21407535), (3, 7135845), (5, 4281507), (9, 2378615), (15, 1427169), (41, 522135), (45, 475723), (123, 174045), (205, 104427), (283, 75645), (369, 58015), (615, 34809), (849, 25215), (1415, 15129), (1681, 12735), (1845, 11603), (2547, 8405), (4245, 5043)]