21123968

素因数分解:

$2^7\times {\mathrm{79}}^1\times {\mathrm{2089}}^1$

素因数の和:2182

約数の個数: 32

約数和(自身を含む): 42636000

約数和(自身を除く): 21512032

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 316, 632, 1264, 2089, 2528, 4178, 5056, 8356, 10112, 16712, 33424, 66848, 133696, 165031, 267392, 330062, 660124, 1320248, 2640496, 5280992, 10561984, 21123968]

約数ペア:

[(1, 21123968), (2, 10561984), (4, 5280992), (8, 2640496), (16, 1320248), (32, 660124), (64, 330062), (79, 267392), (128, 165031), (158, 133696), (316, 66848), (632, 33424), (1264, 16712), (2089, 10112), (2528, 8356), (4178, 5056)]