20175220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 47222784

約数和(自身を除く): 27047564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 127, 130, 169, 188, 235, 254, 260, 338, 470, 508, 611, 635, 676, 845, 940, 1222, 1270, 1651, 1690, 2444, 2540, 3055, 3302, 3380, 5969, 6110, 6604, 7943, 8255, 11938, 12220, 15886, 16510, 21463, 23876, 29845, 31772, 33020, 39715, 42926, 59690, 77597, 79430, 85852, 107315, 119380, 155194, 158860, 214630, 310388, 387985, 429260, 775970, 1008761, 1551940, 2017522, 4035044, 5043805, 10087610, 20175220]

約数ペア:

[(1, 20175220), (2, 10087610), (4, 5043805), (5, 4035044), (10, 2017522), (13, 1551940), (20, 1008761), (26, 775970), (47, 429260), (52, 387985), (65, 310388), (94, 214630), (127, 158860), (130, 155194), (169, 119380), (188, 107315), (235, 85852), (254, 79430), (260, 77597), (338, 59690), (470, 42926), (508, 39715), (611, 33020), (635, 31772), (676, 29845), (845, 23876), (940, 21463), (1222, 16510), (1270, 15886), (1651, 12220), (1690, 11938), (2444, 8255), (2540, 7943), (3055, 6604), (3302, 6110), (3380, 5969)]