13988180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 31268160

約数和(自身を除く): 17279980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 281, 380, 524, 562, 655, 1124, 1310, 1405, 2489, 2620, 2810, 4978, 5339, 5620, 9956, 10678, 12445, 21356, 24890, 26695, 36811, 49780, 53390, 73622, 106780, 147244, 184055, 368110, 699409, 736220, 1398818, 2797636, 3497045, 6994090, 13988180]

約数ペア:

[(1, 13988180), (2, 6994090), (4, 3497045), (5, 2797636), (10, 1398818), (19, 736220), (20, 699409), (38, 368110), (76, 184055), (95, 147244), (131, 106780), (190, 73622), (262, 53390), (281, 49780), (380, 36811), (524, 26695), (562, 24890), (655, 21356), (1124, 12445), (1310, 10678), (1405, 9956), (2489, 5620), (2620, 5339), (2810, 4978)]