20998780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3079}}^1$

素因数の和:3130

約数の個数: 48

約数和(自身を含む): 49674240

約数和(自身を除く): 28675460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3079, 3410, 6158, 6820, 12316, 15395, 30790, 33869, 61580, 67738, 95449, 135476, 169345, 190898, 338690, 381796, 477245, 677380, 954490, 1049939, 1908980, 2099878, 4199756, 5249695, 10499390, 20998780]

約数ペア:

[(1, 20998780), (2, 10499390), (4, 5249695), (5, 4199756), (10, 2099878), (11, 1908980), (20, 1049939), (22, 954490), (31, 677380), (44, 477245), (55, 381796), (62, 338690), (110, 190898), (124, 169345), (155, 135476), (220, 95449), (310, 67738), (341, 61580), (620, 33869), (682, 30790), (1364, 15395), (1705, 12316), (3079, 6820), (3410, 6158)]