21021540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15233}}^1$

素因数の和:15268

約数の個数: 48

約数和(自身を含む): 61423488

約数和(自身を除く): 40401948

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, 15233, 30466, 45699, 60932, 76165, 91398, 152330, 182796, 228495, 304660, 350359, 456990, 700718, 913980, 1051077, 1401436, 1751795, 2102154, 3503590, 4204308, 5255385, 7007180, 10510770, 21021540]

約数ペア:

[(1, 21021540), (2, 10510770), (3, 7007180), (4, 5255385), (5, 4204308), (6, 3503590), (10, 2102154), (12, 1751795), (15, 1401436), (20, 1051077), (23, 913980), (30, 700718), (46, 456990), (60, 350359), (69, 304660), (92, 228495), (115, 182796), (138, 152330), (230, 91398), (276, 76165), (345, 60932), (460, 45699), (690, 30466), (1380, 15233)]