20921688

素因数分解:

$2^3\times 3^2\times {\mathrm{67}}^1\times {\mathrm{4337}}^1$

素因数の和:4416

約数の個数: 48

約数和(自身を含む): 57521880

約数和(自身を除く): 36600192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 67, 72, 134, 201, 268, 402, 536, 603, 804, 1206, 1608, 2412, 4337, 4824, 8674, 13011, 17348, 26022, 34696, 39033, 52044, 78066, 104088, 156132, 290579, 312264, 581158, 871737, 1162316, 1743474, 2324632, 2615211, 3486948, 5230422, 6973896, 10460844, 20921688]

約数ペア:

[(1, 20921688), (2, 10460844), (3, 6973896), (4, 5230422), (6, 3486948), (8, 2615211), (9, 2324632), (12, 1743474), (18, 1162316), (24, 871737), (36, 581158), (67, 312264), (72, 290579), (134, 156132), (201, 104088), (268, 78066), (402, 52044), (536, 39033), (603, 34696), (804, 26022), (1206, 17348), (1608, 13011), (2412, 8674), (4337, 4824)]