20975640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24971}}^1$

素因数の和:24992

約数の個数: 64

約数和(自身を含む): 71919360

約数和(自身を除く): 50943720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24971, 49942, 74913, 99884, 124855, 149826, 174797, 199768, 249710, 299652, 349594, 374565, 499420, 524391, 599304, 699188, 749130, 873985, 998840, 1048782, 1398376, 1498260, 1747970, 2097564, 2621955, 2996520, 3495940, 4195128, 5243910, 6991880, 10487820, 20975640]

約数ペア:

[(1, 20975640), (2, 10487820), (3, 6991880), (4, 5243910), (5, 4195128), (6, 3495940), (7, 2996520), (8, 2621955), (10, 2097564), (12, 1747970), (14, 1498260), (15, 1398376), (20, 1048782), (21, 998840), (24, 873985), (28, 749130), (30, 699188), (35, 599304), (40, 524391), (42, 499420), (56, 374565), (60, 349594), (70, 299652), (84, 249710), (105, 199768), (120, 174797), (140, 149826), (168, 124855), (210, 99884), (280, 74913), (420, 49942), (840, 24971)]