21151559

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5459641

約数列:

[1, 11, 13, 23, 59, 109, 143, 253, 299, 649, 767, 1199, 1357, 1417, 2507, 3289, 6431, 8437, 14927, 15587, 17641, 27577, 32591, 70741, 83603, 147913, 194051, 358501, 919633, 1627043, 1922869, 21151559]

約数ペア:

[(1, 21151559), (11, 1922869), (13, 1627043), (23, 919633), (59, 358501), (109, 194051), (143, 147913), (253, 83603), (299, 70741), (649, 32591), (767, 27577), (1199, 17641), (1357, 15587), (1417, 14927), (2507, 8437), (3289, 6431)]