20572136

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 24787864

約数列:

[1, 2, 4, 8, 13, 19, 26, 29, 38, 52, 58, 76, 104, 116, 152, 232, 247, 359, 377, 494, 551, 718, 754, 988, 1102, 1436, 1508, 1976, 2204, 2872, 3016, 4408, 4667, 6821, 7163, 9334, 10411, 13642, 14326, 18668, 20822, 27284, 28652, 37336, 41644, 54568, 57304, 83288, 88673, 135343, 177346, 197809, 270686, 354692, 395618, 541372, 709384, 791236, 1082744, 1582472, 2571517, 5143034, 10286068, 20572136]

約数ペア:

[(1, 20572136), (2, 10286068), (4, 5143034), (8, 2571517), (13, 1582472), (19, 1082744), (26, 791236), (29, 709384), (38, 541372), (52, 395618), (58, 354692), (76, 270686), (104, 197809), (116, 177346), (152, 135343), (232, 88673), (247, 83288), (359, 57304), (377, 54568), (494, 41644), (551, 37336), (718, 28652), (754, 27284), (988, 20822), (1102, 18668), (1436, 14326), (1508, 13642), (1976, 10411), (2204, 9334), (2872, 7163), (3016, 6821), (4408, 4667)]