21619325

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:103

約数の個数: 72

約数和(自身を含む): 35944128

約数和(自身を除く): 14324803

約数列:

[1, 5, 7, 13, 17, 25, 35, 43, 65, 85, 91, 119, 169, 175, 215, 221, 301, 325, 425, 455, 559, 595, 731, 845, 1075, 1105, 1183, 1505, 1547, 2275, 2795, 2873, 2975, 3655, 3913, 4225, 5117, 5525, 5915, 7267, 7525, 7735, 9503, 13975, 14365, 18275, 19565, 20111, 25585, 29575, 36335, 38675, 47515, 50869, 66521, 71825, 97825, 100555, 123539, 127925, 181675, 237575, 254345, 332605, 502775, 617695, 864773, 1271725, 1663025, 3088475, 4323865, 21619325]

約数ペア:

[(1, 21619325), (5, 4323865), (7, 3088475), (13, 1663025), (17, 1271725), (25, 864773), (35, 617695), (43, 502775), (65, 332605), (85, 254345), (91, 237575), (119, 181675), (169, 127925), (175, 123539), (215, 100555), (221, 97825), (301, 71825), (325, 66521), (425, 50869), (455, 47515), (559, 38675), (595, 36335), (731, 29575), (845, 25585), (1075, 20111), (1105, 19565), (1183, 18275), (1505, 14365), (1547, 13975), (2275, 9503), (2795, 7735), (2873, 7525), (2975, 7267), (3655, 5915), (3913, 5525), (4225, 5117)]