21371896

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:1004

約数の個数: 64

約数和(自身を含む): 50964480

約数和(自身を除く): 29592584

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 91, 104, 124, 182, 217, 248, 364, 403, 434, 728, 806, 868, 947, 1612, 1736, 1894, 2821, 3224, 3788, 5642, 6629, 7576, 11284, 12311, 13258, 22568, 24622, 26516, 29357, 49244, 53032, 58714, 86177, 98488, 117428, 172354, 205499, 234856, 344708, 381641, 410998, 689416, 763282, 821996, 1526564, 1643992, 2671487, 3053128, 5342974, 10685948, 21371896]

約数ペア:

[(1, 21371896), (2, 10685948), (4, 5342974), (7, 3053128), (8, 2671487), (13, 1643992), (14, 1526564), (26, 821996), (28, 763282), (31, 689416), (52, 410998), (56, 381641), (62, 344708), (91, 234856), (104, 205499), (124, 172354), (182, 117428), (217, 98488), (248, 86177), (364, 58714), (403, 53032), (434, 49244), (728, 29357), (806, 26516), (868, 24622), (947, 22568), (1612, 13258), (1736, 12311), (1894, 11284), (2821, 7576), (3224, 6629), (3788, 5642)]