21621964

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{311}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 46964736

約数和(自身を除く): 25342772

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 191, 311, 364, 382, 622, 764, 1244, 1337, 2177, 2483, 2674, 4043, 4354, 4966, 5348, 8086, 8708, 9932, 16172, 17381, 28301, 34762, 56602, 59401, 69524, 113204, 118802, 237604, 415807, 772213, 831614, 1544426, 1663228, 3088852, 5405491, 10810982, 21621964]

約数ペア:

[(1, 21621964), (2, 10810982), (4, 5405491), (7, 3088852), (13, 1663228), (14, 1544426), (26, 831614), (28, 772213), (52, 415807), (91, 237604), (182, 118802), (191, 113204), (311, 69524), (364, 59401), (382, 56602), (622, 34762), (764, 28301), (1244, 17381), (1337, 16172), (2177, 9932), (2483, 8708), (2674, 8086), (4043, 5348), (4354, 4966)]