20161521870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{721859}}^1$

素因数の和:721902

約数の個数: 96

約数和(自身を含む): 59250268800

約数和(自身を除く): 39088746930

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 49, 57, 70, 95, 98, 105, 114, 133, 147, 190, 210, 245, 266, 285, 294, 399, 490, 570, 665, 735, 798, 931, 1330, 1470, 1862, 1995, 2793, 3990, 4655, 5586, 9310, 13965, 27930, 721859, 1443718, 2165577, 3609295, 4331154, 5053013, 7218590, 10106026, 10827885, 13715321, 15159039, 21655770, 25265065, 27430642, 30318078, 35371091, 41145963, 50530130, 68576605, 70742182, 75795195, 82291926, 96007247, 106113273, 137153210, 151590390, 176855455, 192014494, 205729815, 212226546, 288021741, 353710910, 411459630, 480036235, 530566365, 576043482, 672050729, 960072470, 1061132730, 1344101458, 1440108705, 2016152187, 2880217410, 3360253645, 4032304374, 6720507290, 10080760935, 20161521870]

約数ペア:

[(1, 20161521870), (2, 10080760935), (3, 6720507290), (5, 4032304374), (6, 3360253645), (7, 2880217410), (10, 2016152187), (14, 1440108705), (15, 1344101458), (19, 1061132730), (21, 960072470), (30, 672050729), (35, 576043482), (38, 530566365), (42, 480036235), (49, 411459630), (57, 353710910), (70, 288021741), (95, 212226546), (98, 205729815), (105, 192014494), (114, 176855455), (133, 151590390), (147, 137153210), (190, 106113273), (210, 96007247), (245, 82291926), (266, 75795195), (285, 70742182), (294, 68576605), (399, 50530130), (490, 41145963), (570, 35371091), (665, 30318078), (735, 27430642), (798, 25265065), (931, 21655770), (1330, 15159039), (1470, 13715321), (1862, 10827885), (1995, 10106026), (2793, 7218590), (3990, 5053013), (4655, 4331154), (5586, 3609295), (9310, 2165577), (13965, 1443718), (27930, 721859)]