20317460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{421}}^1$

素因数の和:576

約数の個数: 48

約数和(自身を含む): 45373440

約数和(自身を除く): 25055980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 190, 254, 380, 421, 508, 635, 842, 1270, 1684, 2105, 2413, 2540, 4210, 4826, 7999, 8420, 9652, 12065, 15998, 24130, 31996, 39995, 48260, 53467, 79990, 106934, 159980, 213868, 267335, 534670, 1015873, 1069340, 2031746, 4063492, 5079365, 10158730, 20317460]

約数ペア:

[(1, 20317460), (2, 10158730), (4, 5079365), (5, 4063492), (10, 2031746), (19, 1069340), (20, 1015873), (38, 534670), (76, 267335), (95, 213868), (127, 159980), (190, 106934), (254, 79990), (380, 53467), (421, 48260), (508, 39995), (635, 31996), (842, 24130), (1270, 15998), (1684, 12065), (2105, 9652), (2413, 8420), (2540, 7999), (4210, 4826)]