81845855

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 123643584

約数和(自身を除く): 41797729

約数列:

[1, 5, 7, 13, 35, 65, 91, 101, 137, 169, 455, 505, 685, 707, 845, 959, 1183, 1313, 1781, 3535, 4795, 5915, 6565, 8905, 9191, 12467, 13837, 17069, 23153, 45955, 62335, 69185, 85345, 96859, 115765, 119483, 162071, 179881, 484295, 597415, 810355, 899405, 1259167, 2338453, 6295835, 11692265, 16369171, 81845855]

約数ペア:

[(1, 81845855), (5, 16369171), (7, 11692265), (13, 6295835), (35, 2338453), (65, 1259167), (91, 899405), (101, 810355), (137, 597415), (169, 484295), (455, 179881), (505, 162071), (685, 119483), (707, 115765), (845, 96859), (959, 85345), (1183, 69185), (1313, 62335), (1781, 45955), (3535, 23153), (4795, 17069), (5915, 13837), (6565, 12467), (8905, 9191)]