21008240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23873}}^1$

素因数の和:23897

約数の個数: 40

約数和(自身を含む): 53286768

約数和(自身を除く): 32278528

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23873, 47746, 95492, 119365, 190984, 238730, 262603, 381968, 477460, 525206, 954920, 1050412, 1313015, 1909840, 2100824, 2626030, 4201648, 5252060, 10504120, 21008240]

約数ペア:

[(1, 21008240), (2, 10504120), (4, 5252060), (5, 4201648), (8, 2626030), (10, 2100824), (11, 1909840), (16, 1313015), (20, 1050412), (22, 954920), (40, 525206), (44, 477460), (55, 381968), (80, 262603), (88, 238730), (110, 190984), (176, 119365), (220, 95492), (440, 47746), (880, 23873)]