20555444

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 44688000

約数和(自身を除く): 24132556

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 149, 182, 298, 364, 379, 596, 758, 1043, 1516, 1937, 2086, 2653, 3874, 4172, 4927, 5306, 7748, 9854, 10612, 13559, 19708, 27118, 34489, 54236, 56471, 68978, 112942, 137956, 225884, 395297, 734123, 790594, 1468246, 1581188, 2936492, 5138861, 10277722, 20555444]

約数ペア:

[(1, 20555444), (2, 10277722), (4, 5138861), (7, 2936492), (13, 1581188), (14, 1468246), (26, 790594), (28, 734123), (52, 395297), (91, 225884), (149, 137956), (182, 112942), (298, 68978), (364, 56471), (379, 54236), (596, 34489), (758, 27118), (1043, 19708), (1516, 13559), (1937, 10612), (2086, 9854), (2653, 7748), (3874, 5306), (4172, 4927)]