21102920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27767}}^1$

素因数の和:27797

約数の個数: 32

約数和(自身を含む): 49982400

約数和(自身を除く): 28879480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27767, 55534, 111068, 138835, 222136, 277670, 527573, 555340, 1055146, 1110680, 2110292, 2637865, 4220584, 5275730, 10551460, 21102920]

約数ペア:

[(1, 21102920), (2, 10551460), (4, 5275730), (5, 4220584), (8, 2637865), (10, 2110292), (19, 1110680), (20, 1055146), (38, 555340), (40, 527573), (76, 277670), (95, 222136), (152, 138835), (190, 111068), (380, 55534), (760, 27767)]