21805060

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{293}}^1$

素因数の和:424

約数の個数: 36

約数和(自身を含む): 46712484

約数和(自身を除く): 24907424

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 293, 305, 586, 610, 1172, 1220, 1465, 2930, 3721, 5860, 7442, 14884, 17873, 18605, 35746, 37210, 71492, 74420, 89365, 178730, 357460, 1090253, 2180506, 4361012, 5451265, 10902530, 21805060]

約数ペア:

[(1, 21805060), (2, 10902530), (4, 5451265), (5, 4361012), (10, 2180506), (20, 1090253), (61, 357460), (122, 178730), (244, 89365), (293, 74420), (305, 71492), (586, 37210), (610, 35746), (1172, 18605), (1220, 17873), (1465, 14884), (2930, 7442), (3721, 5860)]