21369416

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{433}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 41664000

約数和(自身を除く): 20294584

約数列:

[1, 2, 4, 8, 31, 62, 124, 199, 248, 398, 433, 796, 866, 1592, 1732, 3464, 6169, 12338, 13423, 24676, 26846, 49352, 53692, 86167, 107384, 172334, 344668, 689336, 2671177, 5342354, 10684708, 21369416]

約数ペア:

[(1, 21369416), (2, 10684708), (4, 5342354), (8, 2671177), (31, 689336), (62, 344668), (124, 172334), (199, 107384), (248, 86167), (398, 53692), (433, 49352), (796, 26846), (866, 24676), (1592, 13423), (1732, 12338), (3464, 6169)]