2804780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:111

約数の個数: 72

約数和(自身を含む): 6926640

約数和(自身を除く): 4121860

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 61, 76, 95, 110, 121, 122, 190, 209, 220, 242, 244, 305, 380, 418, 484, 605, 610, 671, 836, 1045, 1159, 1210, 1220, 1342, 2090, 2299, 2318, 2420, 2684, 3355, 4180, 4598, 4636, 5795, 6710, 7381, 9196, 11495, 11590, 12749, 13420, 14762, 22990, 23180, 25498, 29524, 36905, 45980, 50996, 63745, 73810, 127490, 140239, 147620, 254980, 280478, 560956, 701195, 1402390, 2804780]

約数ペア:

[(1, 2804780), (2, 1402390), (4, 701195), (5, 560956), (10, 280478), (11, 254980), (19, 147620), (20, 140239), (22, 127490), (38, 73810), (44, 63745), (55, 50996), (61, 45980), (76, 36905), (95, 29524), (110, 25498), (121, 23180), (122, 22990), (190, 14762), (209, 13420), (220, 12749), (242, 11590), (244, 11495), (305, 9196), (380, 7381), (418, 6710), (484, 5795), (605, 4636), (610, 4598), (671, 4180), (836, 3355), (1045, 2684), (1159, 2420), (1210, 2318), (1220, 2299), (1342, 2090)]