20208370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 25514510

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 53, 65, 70, 91, 106, 130, 182, 265, 371, 419, 455, 530, 689, 742, 838, 910, 1378, 1855, 2095, 2933, 3445, 3710, 4190, 4823, 5447, 5866, 6890, 9646, 10894, 14665, 22207, 24115, 27235, 29330, 38129, 44414, 48230, 54470, 76258, 111035, 155449, 190645, 222070, 288691, 310898, 381290, 577382, 777245, 1443455, 1554490, 2020837, 2886910, 4041674, 10104185, 20208370]

約数ペア:

[(1, 20208370), (2, 10104185), (5, 4041674), (7, 2886910), (10, 2020837), (13, 1554490), (14, 1443455), (26, 777245), (35, 577382), (53, 381290), (65, 310898), (70, 288691), (91, 222070), (106, 190645), (130, 155449), (182, 111035), (265, 76258), (371, 54470), (419, 48230), (455, 44414), (530, 38129), (689, 29330), (742, 27235), (838, 24115), (910, 22207), (1378, 14665), (1855, 10894), (2095, 9646), (2933, 6890), (3445, 5866), (3710, 5447), (4190, 4823)]