26700920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:456

約数の個数: 64

約数和(自身を含む): 63210240

約数和(自身を除く): 36509320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 353, 488, 610, 620, 706, 1220, 1240, 1412, 1765, 1891, 2440, 2824, 3530, 3782, 7060, 7564, 9455, 10943, 14120, 15128, 18910, 21533, 21886, 37820, 43066, 43772, 54715, 75640, 86132, 87544, 107665, 109430, 172264, 215330, 218860, 430660, 437720, 667523, 861320, 1335046, 2670092, 3337615, 5340184, 6675230, 13350460, 26700920]

約数ペア:

[(1, 26700920), (2, 13350460), (4, 6675230), (5, 5340184), (8, 3337615), (10, 2670092), (20, 1335046), (31, 861320), (40, 667523), (61, 437720), (62, 430660), (122, 218860), (124, 215330), (155, 172264), (244, 109430), (248, 107665), (305, 87544), (310, 86132), (353, 75640), (488, 54715), (610, 43772), (620, 43066), (706, 37820), (1220, 21886), (1240, 21533), (1412, 18910), (1765, 15128), (1891, 14120), (2440, 10943), (2824, 9455), (3530, 7564), (3782, 7060)]