21293838

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^2\times {\mathrm{1231}}^1$

素因数の和:1301

約数の個数: 36

約数和(自身を含む): 47711664

約数和(自身を除く): 26417826

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558, 961, 1231, 1922, 2462, 2883, 3693, 5766, 7386, 8649, 11079, 17298, 22158, 38161, 76322, 114483, 228966, 343449, 686898, 1182991, 2365982, 3548973, 7097946, 10646919, 21293838]

約数ペア:

[(1, 21293838), (2, 10646919), (3, 7097946), (6, 3548973), (9, 2365982), (18, 1182991), (31, 686898), (62, 343449), (93, 228966), (186, 114483), (279, 76322), (558, 38161), (961, 22158), (1231, 17298), (1922, 11079), (2462, 8649), (2883, 7386), (3693, 5766)]