21991648

素因数分解:

$2^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3167}}^1$

素因数の和:3215

約数の個数: 48

約数和(自身を含む): 51093504

約数和(自身を除く): 29101856

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 112, 124, 217, 224, 248, 434, 496, 868, 992, 1736, 3167, 3472, 6334, 6944, 12668, 22169, 25336, 44338, 50672, 88676, 98177, 101344, 177352, 196354, 354704, 392708, 687239, 709408, 785416, 1374478, 1570832, 2748956, 3141664, 5497912, 10995824, 21991648]

約数ペア:

[(1, 21991648), (2, 10995824), (4, 5497912), (7, 3141664), (8, 2748956), (14, 1570832), (16, 1374478), (28, 785416), (31, 709408), (32, 687239), (56, 392708), (62, 354704), (112, 196354), (124, 177352), (217, 101344), (224, 98177), (248, 88676), (434, 50672), (496, 44338), (868, 25336), (992, 22169), (1736, 12668), (3167, 6944), (3472, 6334)]