21892520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42101}}^1$

素因数の和:42125

約数の個数: 32

約数和(自身を含む): 53048520

約数和(自身を除く): 31156000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42101, 84202, 168404, 210505, 336808, 421010, 547313, 842020, 1094626, 1684040, 2189252, 2736565, 4378504, 5473130, 10946260, 21892520]

約数ペア:

[(1, 21892520), (2, 10946260), (4, 5473130), (5, 4378504), (8, 2736565), (10, 2189252), (13, 1684040), (20, 1094626), (26, 842020), (40, 547313), (52, 421010), (65, 336808), (104, 210505), (130, 168404), (260, 84202), (520, 42101)]