21121528

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{613}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 40892400

約数和(自身を除く): 19770872

約数列:

[1, 2, 4, 8, 59, 73, 118, 146, 236, 292, 472, 584, 613, 1226, 2452, 4307, 4904, 8614, 17228, 34456, 36167, 44749, 72334, 89498, 144668, 178996, 289336, 357992, 2640191, 5280382, 10560764, 21121528]

約数ペア:

[(1, 21121528), (2, 10560764), (4, 5280382), (8, 2640191), (59, 357992), (73, 289336), (118, 178996), (146, 144668), (236, 89498), (292, 72334), (472, 44749), (584, 36167), (613, 34456), (1226, 17228), (2452, 8614), (4307, 4904)]