91280180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2699}}^1$

素因数の和:2816

約数の個数: 48

約数和(自身を含む): 204120000

約数和(自身を除く): 112839820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 890, 1691, 1780, 2699, 3382, 5398, 6764, 8455, 10796, 13495, 16910, 26990, 33820, 51281, 53980, 102562, 205124, 240211, 256405, 480422, 512810, 960844, 1025620, 1201055, 2402110, 4564009, 4804220, 9128018, 18256036, 22820045, 45640090, 91280180]

約数ペア:

[(1, 91280180), (2, 45640090), (4, 22820045), (5, 18256036), (10, 9128018), (19, 4804220), (20, 4564009), (38, 2402110), (76, 1201055), (89, 1025620), (95, 960844), (178, 512810), (190, 480422), (356, 256405), (380, 240211), (445, 205124), (890, 102562), (1691, 53980), (1780, 51281), (2699, 33820), (3382, 26990), (5398, 16910), (6764, 13495), (8455, 10796)]