20369825

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 31497984

約数和(自身を除く): 11128159

約数列:

[1, 5, 7, 17, 25, 35, 41, 85, 119, 167, 175, 205, 287, 425, 595, 697, 835, 1025, 1169, 1435, 2839, 2975, 3485, 4175, 4879, 5845, 6847, 7175, 14195, 17425, 19873, 24395, 29225, 34235, 47929, 70975, 99365, 116399, 121975, 171175, 239645, 496825, 581995, 814793, 1198225, 2909975, 4073965, 20369825]

約数ペア:

[(1, 20369825), (5, 4073965), (7, 2909975), (17, 1198225), (25, 814793), (35, 581995), (41, 496825), (85, 239645), (119, 171175), (167, 121975), (175, 116399), (205, 99365), (287, 70975), (425, 47929), (595, 34235), (697, 29225), (835, 24395), (1025, 19873), (1169, 17425), (1435, 14195), (2839, 7175), (2975, 6847), (3485, 5845), (4175, 4879)]