21898672

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 44273952

約数和(自身を除く): 22375280

約数列:

[1, 2, 4, 8, 16, 37, 71, 74, 142, 148, 284, 296, 521, 568, 592, 1042, 1136, 2084, 2627, 4168, 5254, 8336, 10508, 19277, 21016, 36991, 38554, 42032, 73982, 77108, 147964, 154216, 295928, 308432, 591856, 1368667, 2737334, 5474668, 10949336, 21898672]

約数ペア:

[(1, 21898672), (2, 10949336), (4, 5474668), (8, 2737334), (16, 1368667), (37, 591856), (71, 308432), (74, 295928), (142, 154216), (148, 147964), (284, 77108), (296, 73982), (521, 42032), (568, 38554), (592, 36991), (1042, 21016), (1136, 19277), (2084, 10508), (2627, 8336), (4168, 5254)]