21545368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{929}}^1$

素因数の和:1171

約数の個数: 32

約数和(自身を含む): 43747200

約数和(自身を除く): 22201832

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 223, 446, 892, 929, 1784, 1858, 2899, 3716, 5798, 7432, 11596, 12077, 23192, 24154, 48308, 96616, 207167, 414334, 828668, 1657336, 2693171, 5386342, 10772684, 21545368]

約数ペア:

[(1, 21545368), (2, 10772684), (4, 5386342), (8, 2693171), (13, 1657336), (26, 828668), (52, 414334), (104, 207167), (223, 96616), (446, 48308), (892, 24154), (929, 23192), (1784, 12077), (1858, 11596), (2899, 7432), (3716, 5798)]