20870564

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 45045504

約数和(自身を除く): 24174940

約数列:

[1, 2, 4, 11, 13, 22, 26, 31, 44, 52, 62, 107, 121, 124, 143, 214, 242, 286, 341, 403, 428, 484, 572, 682, 806, 1177, 1364, 1391, 1573, 1612, 2354, 2782, 3146, 3317, 3751, 4433, 4708, 5564, 6292, 6634, 7502, 8866, 12947, 13268, 15004, 15301, 17732, 25894, 30602, 36487, 43121, 48763, 51788, 61204, 72974, 86242, 97526, 145948, 168311, 172484, 195052, 336622, 401357, 474331, 673244, 802714, 948662, 1605428, 1897324, 5217641, 10435282, 20870564]

約数ペア:

[(1, 20870564), (2, 10435282), (4, 5217641), (11, 1897324), (13, 1605428), (22, 948662), (26, 802714), (31, 673244), (44, 474331), (52, 401357), (62, 336622), (107, 195052), (121, 172484), (124, 168311), (143, 145948), (214, 97526), (242, 86242), (286, 72974), (341, 61204), (403, 51788), (428, 48763), (484, 43121), (572, 36487), (682, 30602), (806, 25894), (1177, 17732), (1364, 15301), (1391, 15004), (1573, 13268), (1612, 12947), (2354, 8866), (2782, 7502), (3146, 6634), (3317, 6292), (3751, 5564), (4433, 4708)]