21130120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48023}}^1$

素因数の和:48045

約数の個数: 32

約数和(自身を含む): 51865920

約数和(自身を除く): 30735800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48023, 96046, 192092, 240115, 384184, 480230, 528253, 960460, 1056506, 1920920, 2113012, 2641265, 4226024, 5282530, 10565060, 21130120]

約数ペア:

[(1, 21130120), (2, 10565060), (4, 5282530), (5, 4226024), (8, 2641265), (10, 2113012), (11, 1920920), (20, 1056506), (22, 960460), (40, 528253), (44, 480230), (55, 384184), (88, 240115), (110, 192092), (220, 96046), (440, 48023)]