20999460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15217}}^1$

素因数の和:15252

約数の個数: 48

約数和(自身を含む): 61358976

約数和(自身を除く): 40359516

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15217, 30434, 45651, 60868, 76085, 91302, 152170, 182604, 228255, 304340, 349991, 456510, 699982, 913020, 1049973, 1399964, 1749955, 2099946, 3499910, 4199892, 5249865, 6999820, 10499730, 20999460]

約数ペア:

[(1, 20999460), (2, 10499730), (3, 6999820), (4, 5249865), (5, 4199892), (6, 3499910), (10, 2099946), (12, 1749955), (15, 1399964), (20, 1049973), (23, 913020), (30, 699982), (46, 456510), (60, 349991), (69, 304340), (92, 228255), (115, 182604), (138, 152170), (230, 91302), (276, 76085), (345, 60868), (460, 45651), (690, 30434), (1380, 15217)]