21404448

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{5717}}^1$

素因数の和:5746

約数の個数: 72

約数和(自身を含む): 65562588

約数和(自身を除く): 44158140

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 5717, 11434, 17151, 22868, 34302, 45736, 51453, 68604, 74321, 91472, 102906, 137208, 148642, 182944, 205812, 222963, 274416, 297284, 411624, 445926, 548832, 594568, 668889, 823248, 891852, 1189136, 1337778, 1646496, 1783704, 2378272, 2675556, 3567408, 5351112, 7134816, 10702224, 21404448]

約数ペア:

[(1, 21404448), (2, 10702224), (3, 7134816), (4, 5351112), (6, 3567408), (8, 2675556), (9, 2378272), (12, 1783704), (13, 1646496), (16, 1337778), (18, 1189136), (24, 891852), (26, 823248), (32, 668889), (36, 594568), (39, 548832), (48, 445926), (52, 411624), (72, 297284), (78, 274416), (96, 222963), (104, 205812), (117, 182944), (144, 148642), (156, 137208), (208, 102906), (234, 91472), (288, 74321), (312, 68604), (416, 51453), (468, 45736), (624, 34302), (936, 22868), (1248, 17151), (1872, 11434), (3744, 5717)]