20512652540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{439}}^1\times {\mathrm{2593}}^1$

素因数の和:3111

約数の個数: 96

約数和(自身を含む): 46594880640

約数和(自身を除く): 26082228100

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 439, 530, 878, 901, 1060, 1756, 1802, 2195, 2593, 3604, 4390, 4505, 5186, 7463, 8780, 9010, 10372, 12965, 14926, 18020, 23267, 25930, 29852, 37315, 44081, 46534, 51860, 74630, 88162, 93068, 116335, 137429, 149260, 176324, 220405, 232670, 274858, 395539, 440810, 465340, 549716, 687145, 791078, 881620, 1138327, 1374290, 1582156, 1977695, 2276654, 2336293, 2748580, 3955390, 4553308, 4672586, 5691635, 7910780, 9345172, 11383270, 11681465, 19351559, 22766540, 23362930, 38703118, 46725860, 60331331, 77406236, 96757795, 120662662, 193515590, 241325324, 301656655, 387031180, 603313310, 1025632627, 1206626620, 2051265254, 4102530508, 5128163135, 10256326270, 20512652540]

約数ペア:

[(1, 20512652540), (2, 10256326270), (4, 5128163135), (5, 4102530508), (10, 2051265254), (17, 1206626620), (20, 1025632627), (34, 603313310), (53, 387031180), (68, 301656655), (85, 241325324), (106, 193515590), (170, 120662662), (212, 96757795), (265, 77406236), (340, 60331331), (439, 46725860), (530, 38703118), (878, 23362930), (901, 22766540), (1060, 19351559), (1756, 11681465), (1802, 11383270), (2195, 9345172), (2593, 7910780), (3604, 5691635), (4390, 4672586), (4505, 4553308), (5186, 3955390), (7463, 2748580), (8780, 2336293), (9010, 2276654), (10372, 1977695), (12965, 1582156), (14926, 1374290), (18020, 1138327), (23267, 881620), (25930, 791078), (29852, 687145), (37315, 549716), (44081, 465340), (46534, 440810), (51860, 395539), (74630, 274858), (88162, 232670), (93068, 220405), (116335, 176324), (137429, 149260)]