20302180

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 44089920

約数和(自身を除く): 23787740

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 107, 179, 212, 214, 265, 358, 428, 530, 535, 716, 895, 1060, 1070, 1790, 2140, 3580, 5671, 9487, 11342, 18974, 19153, 22684, 28355, 37948, 38306, 47435, 56710, 76612, 94870, 95765, 113420, 189740, 191530, 383060, 1015109, 2030218, 4060436, 5075545, 10151090, 20302180]

約数ペア:

[(1, 20302180), (2, 10151090), (4, 5075545), (5, 4060436), (10, 2030218), (20, 1015109), (53, 383060), (106, 191530), (107, 189740), (179, 113420), (212, 95765), (214, 94870), (265, 76612), (358, 56710), (428, 47435), (530, 38306), (535, 37948), (716, 28355), (895, 22684), (1060, 19153), (1070, 18974), (1790, 11342), (2140, 9487), (3580, 5671)]