20878624

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1619}}^1$

素因数の和:1673

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 24844256

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 104, 124, 208, 248, 403, 416, 496, 806, 992, 1612, 1619, 3224, 3238, 6448, 6476, 12896, 12952, 21047, 25904, 42094, 50189, 51808, 84188, 100378, 168376, 200756, 336752, 401512, 652457, 673504, 803024, 1304914, 1606048, 2609828, 5219656, 10439312, 20878624]

約数ペア:

[(1, 20878624), (2, 10439312), (4, 5219656), (8, 2609828), (13, 1606048), (16, 1304914), (26, 803024), (31, 673504), (32, 652457), (52, 401512), (62, 336752), (104, 200756), (124, 168376), (208, 100378), (248, 84188), (403, 51808), (416, 50189), (496, 42094), (806, 25904), (992, 21047), (1612, 12952), (1619, 12896), (3224, 6476), (3238, 6448)]