38905460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1987}}^1$

素因数の和:2096

約数の個数: 48

約数和(自身を含む): 90175680

約数和(自身を除く): 51270220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 1987, 3916, 3974, 4895, 7948, 9790, 9935, 19580, 19870, 21857, 39740, 43714, 87428, 109285, 176843, 218570, 353686, 437140, 707372, 884215, 1768430, 1945273, 3536860, 3890546, 7781092, 9726365, 19452730, 38905460]

約数ペア:

[(1, 38905460), (2, 19452730), (4, 9726365), (5, 7781092), (10, 3890546), (11, 3536860), (20, 1945273), (22, 1768430), (44, 884215), (55, 707372), (89, 437140), (110, 353686), (178, 218570), (220, 176843), (356, 109285), (445, 87428), (890, 43714), (979, 39740), (1780, 21857), (1958, 19870), (1987, 19580), (3916, 9935), (3974, 9790), (4895, 7948)]