21038790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{30491}}^1$

素因数の和:30524

約数の個数: 32

約数和(自身を含む): 52690176

約数和(自身を除く): 31651386

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 30491, 60982, 91473, 152455, 182946, 304910, 457365, 701293, 914730, 1402586, 2103879, 3506465, 4207758, 7012930, 10519395, 21038790]

約数ペア:

[(1, 21038790), (2, 10519395), (3, 7012930), (5, 4207758), (6, 3506465), (10, 2103879), (15, 1402586), (23, 914730), (30, 701293), (46, 457365), (69, 304910), (115, 182946), (138, 152455), (230, 91473), (345, 60982), (690, 30491)]