21981648

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{35227}}^1$

素因数の和:35251

約数の個数: 40

約数和(自身を含む): 61155808

約数和(自身を除く): 39174160

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 35227, 70454, 105681, 140908, 211362, 281816, 422724, 457951, 563632, 845448, 915902, 1373853, 1690896, 1831804, 2747706, 3663608, 5495412, 7327216, 10990824, 21981648]

約数ペア:

[(1, 21981648), (2, 10990824), (3, 7327216), (4, 5495412), (6, 3663608), (8, 2747706), (12, 1831804), (13, 1690896), (16, 1373853), (24, 915902), (26, 845448), (39, 563632), (48, 457951), (52, 422724), (78, 281816), (104, 211362), (156, 140908), (208, 105681), (312, 70454), (624, 35227)]