20180811640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{359}}^1\times {\mathrm{509}}^1$

素因数の和:1141

約数の個数: 128

約数和(自身を含む): 49968576000

約数和(自身を除く): 29787764360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 251, 359, 440, 502, 509, 718, 1004, 1018, 1255, 1436, 1795, 2008, 2036, 2510, 2545, 2761, 2872, 3590, 3949, 4072, 5020, 5090, 5522, 5599, 7180, 7898, 10040, 10180, 11044, 11198, 13805, 14360, 15796, 19745, 20360, 22088, 22396, 27610, 27995, 31592, 39490, 44792, 55220, 55990, 78980, 90109, 110440, 111980, 127759, 157960, 180218, 182731, 223960, 255518, 360436, 365462, 450545, 511036, 638795, 720872, 730924, 901090, 913655, 991199, 1022072, 1277590, 1405349, 1461848, 1802180, 1827310, 1982398, 2010041, 2555180, 2810698, 3604360, 3654620, 3964796, 4020082, 4955995, 5110360, 5621396, 7026745, 7309240, 7929592, 8040164, 9911990, 10050205, 11242792, 14053490, 16080328, 19823980, 20100410, 28106980, 39647960, 40200820, 45865481, 56213960, 80401640, 91730962, 183461924, 229327405, 366923848, 458654810, 504520291, 917309620, 1009040582, 1834619240, 2018081164, 2522601455, 4036162328, 5045202910, 10090405820, 20180811640]

約数ペア:

[(1, 20180811640), (2, 10090405820), (4, 5045202910), (5, 4036162328), (8, 2522601455), (10, 2018081164), (11, 1834619240), (20, 1009040582), (22, 917309620), (40, 504520291), (44, 458654810), (55, 366923848), (88, 229327405), (110, 183461924), (220, 91730962), (251, 80401640), (359, 56213960), (440, 45865481), (502, 40200820), (509, 39647960), (718, 28106980), (1004, 20100410), (1018, 19823980), (1255, 16080328), (1436, 14053490), (1795, 11242792), (2008, 10050205), (2036, 9911990), (2510, 8040164), (2545, 7929592), (2761, 7309240), (2872, 7026745), (3590, 5621396), (3949, 5110360), (4072, 4955995), (5020, 4020082), (5090, 3964796), (5522, 3654620), (5599, 3604360), (7180, 2810698), (7898, 2555180), (10040, 2010041), (10180, 1982398), (11044, 1827310), (11198, 1802180), (13805, 1461848), (14360, 1405349), (15796, 1277590), (19745, 1022072), (20360, 991199), (22088, 913655), (22396, 901090), (27610, 730924), (27995, 720872), (31592, 638795), (39490, 511036), (44792, 450545), (55220, 365462), (55990, 360436), (78980, 255518), (90109, 223960), (110440, 182731), (111980, 180218), (127759, 157960)]