20210280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9907}}^1$

素因数の和:9938

約数の個数: 64

約数和(自身を含む): 64203840

約数和(自身を除く): 43993560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 9907, 19814, 29721, 39628, 49535, 59442, 79256, 99070, 118884, 148605, 168419, 198140, 237768, 297210, 336838, 396280, 505257, 594420, 673676, 842095, 1010514, 1188840, 1347352, 1684190, 2021028, 2526285, 3368380, 4042056, 5052570, 6736760, 10105140, 20210280]

約数ペア:

[(1, 20210280), (2, 10105140), (3, 6736760), (4, 5052570), (5, 4042056), (6, 3368380), (8, 2526285), (10, 2021028), (12, 1684190), (15, 1347352), (17, 1188840), (20, 1010514), (24, 842095), (30, 673676), (34, 594420), (40, 505257), (51, 396280), (60, 336838), (68, 297210), (85, 237768), (102, 198140), (120, 168419), (136, 148605), (170, 118884), (204, 99070), (255, 79256), (340, 59442), (408, 49535), (510, 39628), (680, 29721), (1020, 19814), (2040, 9907)]