20918738

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:362

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13917742

約数列:

[1, 2, 17, 31, 34, 62, 89, 178, 223, 446, 527, 1054, 1513, 2759, 3026, 3791, 5518, 6913, 7582, 13826, 19847, 39694, 46903, 93806, 117521, 235042, 337399, 615257, 674798, 1230514, 10459369, 20918738]

約数ペア:

[(1, 20918738), (2, 10459369), (17, 1230514), (31, 674798), (34, 615257), (62, 337399), (89, 235042), (178, 117521), (223, 93806), (446, 46903), (527, 39694), (1054, 19847), (1513, 13826), (2759, 7582), (3026, 6913), (3791, 5518)]