21042448

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2111}}^1$

素因数の和:2215

約数の個数: 40

約数和(自身を含む): 47139840

約数和(自身を除く): 26097392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2111, 2492, 4222, 4984, 8444, 9968, 14777, 16888, 29554, 33776, 59108, 118216, 187879, 236432, 375758, 751516, 1315153, 1503032, 2630306, 3006064, 5260612, 10521224, 21042448]

約数ペア:

[(1, 21042448), (2, 10521224), (4, 5260612), (7, 3006064), (8, 2630306), (14, 1503032), (16, 1315153), (28, 751516), (56, 375758), (89, 236432), (112, 187879), (178, 118216), (356, 59108), (623, 33776), (712, 29554), (1246, 16888), (1424, 14777), (2111, 9968), (2492, 8444), (4222, 4984)]