257261620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1877}}^1$

素因数の和:1993

約数の個数: 96

約数和(自身を含む): 681488640

約数和(自身を除く): 424227020

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 89, 110, 140, 154, 178, 220, 308, 356, 385, 445, 623, 770, 890, 979, 1246, 1540, 1780, 1877, 1958, 2492, 3115, 3754, 3916, 4895, 6230, 6853, 7508, 9385, 9790, 12460, 13139, 13706, 18770, 19580, 20647, 26278, 27412, 34265, 37540, 41294, 52556, 65695, 68530, 82588, 103235, 131390, 137060, 144529, 167053, 206470, 262780, 289058, 334106, 412940, 578116, 668212, 722645, 835265, 1169371, 1445290, 1670530, 1837583, 2338742, 2890580, 3341060, 3675166, 4677484, 5846855, 7350332, 9187915, 11693710, 12863081, 18375830, 23387420, 25726162, 36751660, 51452324, 64315405, 128630810, 257261620]

約数ペア:

[(1, 257261620), (2, 128630810), (4, 64315405), (5, 51452324), (7, 36751660), (10, 25726162), (11, 23387420), (14, 18375830), (20, 12863081), (22, 11693710), (28, 9187915), (35, 7350332), (44, 5846855), (55, 4677484), (70, 3675166), (77, 3341060), (89, 2890580), (110, 2338742), (140, 1837583), (154, 1670530), (178, 1445290), (220, 1169371), (308, 835265), (356, 722645), (385, 668212), (445, 578116), (623, 412940), (770, 334106), (890, 289058), (979, 262780), (1246, 206470), (1540, 167053), (1780, 144529), (1877, 137060), (1958, 131390), (2492, 103235), (3115, 82588), (3754, 68530), (3916, 65695), (4895, 52556), (6230, 41294), (6853, 37540), (7508, 34265), (9385, 27412), (9790, 26278), (12460, 20647), (13139, 19580), (13706, 18770)]