20813950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:597

約数の個数: 48

約数和(自身を含む): 41943744

約数和(自身を除く): 21129794

約数列:

[1, 2, 5, 10, 17, 25, 34, 47, 50, 85, 94, 170, 235, 425, 470, 521, 799, 850, 1042, 1175, 1598, 2350, 2605, 3995, 5210, 7990, 8857, 13025, 17714, 19975, 24487, 26050, 39950, 44285, 48974, 88570, 122435, 221425, 244870, 416279, 442850, 612175, 832558, 1224350, 2081395, 4162790, 10406975, 20813950]

約数ペア:

[(1, 20813950), (2, 10406975), (5, 4162790), (10, 2081395), (17, 1224350), (25, 832558), (34, 612175), (47, 442850), (50, 416279), (85, 244870), (94, 221425), (170, 122435), (235, 88570), (425, 48974), (470, 44285), (521, 39950), (799, 26050), (850, 24487), (1042, 19975), (1175, 17714), (1598, 13025), (2350, 8857), (2605, 7990), (3995, 5210)]