21619060

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 47013120

約数和(自身を除く): 25394060

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 109, 188, 211, 218, 235, 422, 436, 470, 545, 844, 940, 1055, 1090, 2110, 2180, 4220, 5123, 9917, 10246, 19834, 20492, 22999, 25615, 39668, 45998, 49585, 51230, 91996, 99170, 102460, 114995, 198340, 229990, 459980, 1080953, 2161906, 4323812, 5404765, 10809530, 21619060]

約数ペア:

[(1, 21619060), (2, 10809530), (4, 5404765), (5, 4323812), (10, 2161906), (20, 1080953), (47, 459980), (94, 229990), (109, 198340), (188, 114995), (211, 102460), (218, 99170), (235, 91996), (422, 51230), (436, 49585), (470, 45998), (545, 39668), (844, 25615), (940, 22999), (1055, 20492), (1090, 19834), (2110, 10246), (2180, 9917), (4220, 5123)]