21707860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1151}}^1$

素因数の和:1224

約数の個数: 48

約数和(自身を含む): 48771072

約数和(自身を除く): 27063212

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 115, 164, 205, 230, 410, 460, 820, 943, 1151, 1886, 2302, 3772, 4604, 4715, 5755, 9430, 11510, 18860, 23020, 26473, 47191, 52946, 94382, 105892, 132365, 188764, 235955, 264730, 471910, 529460, 943820, 1085393, 2170786, 4341572, 5426965, 10853930, 21707860]

約数ペア:

[(1, 21707860), (2, 10853930), (4, 5426965), (5, 4341572), (10, 2170786), (20, 1085393), (23, 943820), (41, 529460), (46, 471910), (82, 264730), (92, 235955), (115, 188764), (164, 132365), (205, 105892), (230, 94382), (410, 52946), (460, 47191), (820, 26473), (943, 23020), (1151, 18860), (1886, 11510), (2302, 9430), (3772, 5755), (4604, 4715)]