21042880

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3461}}^1$

素因数の和:3497

約数の個数: 56

約数和(自身を含む): 52760880

約数和(自身を除く): 31718000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3461, 6080, 6922, 13844, 17305, 27688, 34610, 55376, 65759, 69220, 110752, 131518, 138440, 221504, 263036, 276880, 328795, 526072, 553760, 657590, 1052144, 1107520, 1315180, 2104288, 2630360, 4208576, 5260720, 10521440, 21042880]

約数ペア:

[(1, 21042880), (2, 10521440), (4, 5260720), (5, 4208576), (8, 2630360), (10, 2104288), (16, 1315180), (19, 1107520), (20, 1052144), (32, 657590), (38, 553760), (40, 526072), (64, 328795), (76, 276880), (80, 263036), (95, 221504), (152, 138440), (160, 131518), (190, 110752), (304, 69220), (320, 65759), (380, 55376), (608, 34610), (760, 27688), (1216, 17305), (1520, 13844), (3040, 6922), (3461, 6080)]