81797520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{269}}^1$

素因数の和:473

約数の個数: 160

約数和(自身を含む): 292481280

約数和(自身を除く): 210683760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 181, 210, 240, 269, 280, 336, 362, 420, 538, 543, 560, 724, 807, 840, 905, 1076, 1086, 1267, 1345, 1448, 1614, 1680, 1810, 1883, 2152, 2172, 2534, 2690, 2715, 2896, 3228, 3620, 3766, 3801, 4035, 4304, 4344, 5068, 5380, 5430, 5649, 6335, 6456, 7240, 7532, 7602, 8070, 8688, 9415, 10136, 10760, 10860, 11298, 12670, 12912, 14480, 15064, 15204, 16140, 18830, 19005, 20272, 21520, 21720, 22596, 25340, 28245, 30128, 30408, 32280, 37660, 38010, 43440, 45192, 48689, 50680, 56490, 60816, 64560, 75320, 76020, 90384, 97378, 101360, 112980, 146067, 150640, 152040, 194756, 225960, 243445, 292134, 304080, 340823, 389512, 451920, 486890, 584268, 681646, 730335, 779024, 973780, 1022469, 1168536, 1363292, 1460670, 1704115, 1947560, 2044938, 2337072, 2726584, 2921340, 3408230, 3895120, 4089876, 5112345, 5453168, 5842680, 6816460, 8179752, 10224690, 11685360, 13632920, 16359504, 20449380, 27265840, 40898760, 81797520]

約数ペア:

[(1, 81797520), (2, 40898760), (3, 27265840), (4, 20449380), (5, 16359504), (6, 13632920), (7, 11685360), (8, 10224690), (10, 8179752), (12, 6816460), (14, 5842680), (15, 5453168), (16, 5112345), (20, 4089876), (21, 3895120), (24, 3408230), (28, 2921340), (30, 2726584), (35, 2337072), (40, 2044938), (42, 1947560), (48, 1704115), (56, 1460670), (60, 1363292), (70, 1168536), (80, 1022469), (84, 973780), (105, 779024), (112, 730335), (120, 681646), (140, 584268), (168, 486890), (181, 451920), (210, 389512), (240, 340823), (269, 304080), (280, 292134), (336, 243445), (362, 225960), (420, 194756), (538, 152040), (543, 150640), (560, 146067), (724, 112980), (807, 101360), (840, 97378), (905, 90384), (1076, 76020), (1086, 75320), (1267, 64560), (1345, 60816), (1448, 56490), (1614, 50680), (1680, 48689), (1810, 45192), (1883, 43440), (2152, 38010), (2172, 37660), (2534, 32280), (2690, 30408), (2715, 30128), (2896, 28245), (3228, 25340), (3620, 22596), (3766, 21720), (3801, 21520), (4035, 20272), (4304, 19005), (4344, 18830), (5068, 16140), (5380, 15204), (5430, 15064), (5649, 14480), (6335, 12912), (6456, 12670), (7240, 11298), (7532, 10860), (7602, 10760), (8070, 10136), (8688, 9415)]