21207888

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{11329}}^1$

素因数の和:11356

約数の個数: 60

約数和(自身を含む): 63923860

約数和(自身を除く): 42715972

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 11329, 22658, 33987, 45316, 67974, 90632, 101961, 135948, 147277, 181264, 203922, 271896, 294554, 407844, 441831, 543792, 589108, 815688, 883662, 1178216, 1325493, 1631376, 1767324, 2356432, 2650986, 3534648, 5301972, 7069296, 10603944, 21207888]

約数ペア:

[(1, 21207888), (2, 10603944), (3, 7069296), (4, 5301972), (6, 3534648), (8, 2650986), (9, 2356432), (12, 1767324), (13, 1631376), (16, 1325493), (18, 1178216), (24, 883662), (26, 815688), (36, 589108), (39, 543792), (48, 441831), (52, 407844), (72, 294554), (78, 271896), (104, 203922), (117, 181264), (144, 147277), (156, 135948), (208, 101961), (234, 90632), (312, 67974), (468, 45316), (624, 33987), (936, 22658), (1872, 11329)]