31921780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3539}}^1$

素因数の和:3600

約数の個数: 48

約数和(自身を含む): 74934720

約数和(自身を除く): 43012940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 3539, 4510, 7078, 9020, 14156, 17695, 35390, 38929, 70780, 77858, 145099, 155716, 194645, 290198, 389290, 580396, 725495, 778580, 1450990, 1596089, 2901980, 3192178, 6384356, 7980445, 15960890, 31921780]

約数ペア:

[(1, 31921780), (2, 15960890), (4, 7980445), (5, 6384356), (10, 3192178), (11, 2901980), (20, 1596089), (22, 1450990), (41, 778580), (44, 725495), (55, 580396), (82, 389290), (110, 290198), (164, 194645), (205, 155716), (220, 145099), (410, 77858), (451, 70780), (820, 38929), (902, 35390), (1804, 17695), (2255, 14156), (3539, 9020), (4510, 7078)]