20000540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 51717120

約数和(自身を除く): 31716580

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 73, 76, 95, 103, 133, 140, 146, 190, 206, 266, 292, 365, 380, 412, 511, 515, 532, 665, 721, 730, 1022, 1030, 1330, 1387, 1442, 1460, 1957, 2044, 2060, 2555, 2660, 2774, 2884, 3605, 3914, 5110, 5548, 6935, 7210, 7519, 7828, 9709, 9785, 10220, 13699, 13870, 14420, 15038, 19418, 19570, 27398, 27740, 30076, 37595, 38836, 39140, 48545, 52633, 54796, 68495, 75190, 97090, 105266, 136990, 142861, 150380, 194180, 210532, 263165, 273980, 285722, 526330, 571444, 714305, 1000027, 1052660, 1428610, 2000054, 2857220, 4000108, 5000135, 10000270, 20000540]

約数ペア:

[(1, 20000540), (2, 10000270), (4, 5000135), (5, 4000108), (7, 2857220), (10, 2000054), (14, 1428610), (19, 1052660), (20, 1000027), (28, 714305), (35, 571444), (38, 526330), (70, 285722), (73, 273980), (76, 263165), (95, 210532), (103, 194180), (133, 150380), (140, 142861), (146, 136990), (190, 105266), (206, 97090), (266, 75190), (292, 68495), (365, 54796), (380, 52633), (412, 48545), (511, 39140), (515, 38836), (532, 37595), (665, 30076), (721, 27740), (730, 27398), (1022, 19570), (1030, 19418), (1330, 15038), (1387, 14420), (1442, 13870), (1460, 13699), (1957, 10220), (2044, 9785), (2060, 9709), (2555, 7828), (2660, 7519), (2774, 7210), (2884, 6935), (3605, 5548), (3914, 5110)]