205548040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^2\times {\mathrm{1381}}^1$

素因数の和:1514

約数の個数: 48

約数和(自身を含む): 470529540

約数和(自身を除く): 264981500

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 1381, 2440, 2762, 3721, 5524, 6905, 7442, 11048, 13810, 14884, 18605, 27620, 29768, 37210, 55240, 74420, 84241, 148840, 168482, 336964, 421205, 673928, 842410, 1684820, 3369640, 5138701, 10277402, 20554804, 25693505, 41109608, 51387010, 102774020, 205548040]

約数ペア:

[(1, 205548040), (2, 102774020), (4, 51387010), (5, 41109608), (8, 25693505), (10, 20554804), (20, 10277402), (40, 5138701), (61, 3369640), (122, 1684820), (244, 842410), (305, 673928), (488, 421205), (610, 336964), (1220, 168482), (1381, 148840), (2440, 84241), (2762, 74420), (3721, 55240), (5524, 37210), (6905, 29768), (7442, 27620), (11048, 18605), (13810, 14884)]