21756770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 26765470

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 47, 70, 85, 94, 119, 170, 235, 238, 329, 389, 470, 595, 658, 778, 799, 1190, 1598, 1645, 1945, 2723, 3290, 3890, 3995, 5446, 5593, 6613, 7990, 11186, 13226, 13615, 18283, 27230, 27965, 33065, 36566, 46291, 55930, 66130, 91415, 92582, 127981, 182830, 231455, 255962, 310811, 462910, 621622, 639905, 1279810, 1554055, 2175677, 3108110, 4351354, 10878385, 21756770]

約数ペア:

[(1, 21756770), (2, 10878385), (5, 4351354), (7, 3108110), (10, 2175677), (14, 1554055), (17, 1279810), (34, 639905), (35, 621622), (47, 462910), (70, 310811), (85, 255962), (94, 231455), (119, 182830), (170, 127981), (235, 92582), (238, 91415), (329, 66130), (389, 55930), (470, 46291), (595, 36566), (658, 33065), (778, 27965), (799, 27230), (1190, 18283), (1598, 13615), (1645, 13226), (1945, 11186), (2723, 7990), (3290, 6613), (3890, 5593), (3995, 5446)]