21473480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1447}}^1$

素因数の和:1518

約数の個数: 64

約数和(自身を含む): 56298240

約数和(自身を除く): 34824760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1447, 1484, 1855, 2120, 2894, 2968, 3710, 5788, 7235, 7420, 10129, 11576, 14470, 14840, 20258, 28940, 40516, 50645, 57880, 76691, 81032, 101290, 153382, 202580, 306764, 383455, 405160, 536837, 613528, 766910, 1073674, 1533820, 2147348, 2684185, 3067640, 4294696, 5368370, 10736740, 21473480]

約数ペア:

[(1, 21473480), (2, 10736740), (4, 5368370), (5, 4294696), (7, 3067640), (8, 2684185), (10, 2147348), (14, 1533820), (20, 1073674), (28, 766910), (35, 613528), (40, 536837), (53, 405160), (56, 383455), (70, 306764), (106, 202580), (140, 153382), (212, 101290), (265, 81032), (280, 76691), (371, 57880), (424, 50645), (530, 40516), (742, 28940), (1060, 20258), (1447, 14840), (1484, 14470), (1855, 11576), (2120, 10129), (2894, 7420), (2968, 7235), (3710, 5788)]