28895620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 67144896

約数和(自身を除く): 38249276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 103, 130, 166, 169, 206, 260, 332, 338, 412, 415, 515, 676, 830, 845, 1030, 1079, 1339, 1660, 1690, 2060, 2158, 2678, 3380, 4316, 5356, 5395, 6695, 8549, 10790, 13390, 14027, 17098, 17407, 21580, 26780, 28054, 34196, 34814, 42745, 56108, 69628, 70135, 85490, 87035, 111137, 140270, 170980, 174070, 222274, 280540, 348140, 444548, 555685, 1111370, 1444781, 2222740, 2889562, 5779124, 7223905, 14447810, 28895620]

約数ペア:

[(1, 28895620), (2, 14447810), (4, 7223905), (5, 5779124), (10, 2889562), (13, 2222740), (20, 1444781), (26, 1111370), (52, 555685), (65, 444548), (83, 348140), (103, 280540), (130, 222274), (166, 174070), (169, 170980), (206, 140270), (260, 111137), (332, 87035), (338, 85490), (412, 70135), (415, 69628), (515, 56108), (676, 42745), (830, 34814), (845, 34196), (1030, 28054), (1079, 26780), (1339, 21580), (1660, 17407), (1690, 17098), (2060, 14027), (2158, 13390), (2678, 10790), (3380, 8549), (4316, 6695), (5356, 5395)]