21378864

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{34261}}^1$

素因数の和:34285

約数の個数: 40

約数和(自身を含む): 59478832

約数和(自身を除く): 38099968

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 34261, 68522, 102783, 137044, 205566, 274088, 411132, 445393, 548176, 822264, 890786, 1336179, 1644528, 1781572, 2672358, 3563144, 5344716, 7126288, 10689432, 21378864]

約数ペア:

[(1, 21378864), (2, 10689432), (3, 7126288), (4, 5344716), (6, 3563144), (8, 2672358), (12, 1781572), (13, 1644528), (16, 1336179), (24, 890786), (26, 822264), (39, 548176), (48, 445393), (52, 411132), (78, 274088), (104, 205566), (156, 137044), (208, 102783), (312, 68522), (624, 34261)]