20764870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 45256320

約数和(自身を除く): 24491450

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 53, 58, 70, 106, 145, 193, 203, 265, 290, 371, 386, 406, 530, 742, 965, 1015, 1351, 1537, 1855, 1930, 2030, 2702, 3074, 3710, 5597, 6755, 7685, 10229, 10759, 11194, 13510, 15370, 20458, 21518, 27985, 39179, 51145, 53795, 55970, 71603, 78358, 102290, 107590, 143206, 195895, 296641, 358015, 391790, 593282, 716030, 1483205, 2076487, 2966410, 4152974, 10382435, 20764870]

約数ペア:

[(1, 20764870), (2, 10382435), (5, 4152974), (7, 2966410), (10, 2076487), (14, 1483205), (29, 716030), (35, 593282), (53, 391790), (58, 358015), (70, 296641), (106, 195895), (145, 143206), (193, 107590), (203, 102290), (265, 78358), (290, 71603), (371, 55970), (386, 53795), (406, 51145), (530, 39179), (742, 27985), (965, 21518), (1015, 20458), (1351, 15370), (1537, 13510), (1855, 11194), (1930, 10759), (2030, 10229), (2702, 7685), (3074, 6755), (3710, 5597)]