261399060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{661}}^1$

素因数の和:715

約数の個数: 144

約数和(自身を含む): 860255760

約数和(自身を除く): 598856700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 169, 180, 195, 234, 260, 338, 390, 468, 507, 585, 661, 676, 780, 845, 1014, 1170, 1322, 1521, 1690, 1983, 2028, 2197, 2340, 2535, 2644, 3042, 3305, 3380, 3966, 4394, 5070, 5949, 6084, 6591, 6610, 7605, 7932, 8593, 8788, 9915, 10140, 10985, 11898, 13182, 13220, 15210, 17186, 19773, 19830, 21970, 23796, 25779, 26364, 29745, 30420, 32955, 34372, 39546, 39660, 42965, 43940, 51558, 59490, 65910, 77337, 79092, 85930, 98865, 103116, 111709, 118980, 128895, 131820, 154674, 171860, 197730, 223418, 257790, 309348, 335127, 386685, 395460, 446836, 515580, 558545, 670254, 773370, 1005381, 1117090, 1340508, 1452217, 1546740, 1675635, 2010762, 2234180, 2904434, 3351270, 4021524, 4356651, 5026905, 5808868, 6702540, 7261085, 8713302, 10053810, 13069953, 14522170, 17426604, 20107620, 21783255, 26139906, 29044340, 43566510, 52279812, 65349765, 87133020, 130699530, 261399060]

約数ペア:

[(1, 261399060), (2, 130699530), (3, 87133020), (4, 65349765), (5, 52279812), (6, 43566510), (9, 29044340), (10, 26139906), (12, 21783255), (13, 20107620), (15, 17426604), (18, 14522170), (20, 13069953), (26, 10053810), (30, 8713302), (36, 7261085), (39, 6702540), (45, 5808868), (52, 5026905), (60, 4356651), (65, 4021524), (78, 3351270), (90, 2904434), (117, 2234180), (130, 2010762), (156, 1675635), (169, 1546740), (180, 1452217), (195, 1340508), (234, 1117090), (260, 1005381), (338, 773370), (390, 670254), (468, 558545), (507, 515580), (585, 446836), (661, 395460), (676, 386685), (780, 335127), (845, 309348), (1014, 257790), (1170, 223418), (1322, 197730), (1521, 171860), (1690, 154674), (1983, 131820), (2028, 128895), (2197, 118980), (2340, 111709), (2535, 103116), (2644, 98865), (3042, 85930), (3305, 79092), (3380, 77337), (3966, 65910), (4394, 59490), (5070, 51558), (5949, 43940), (6084, 42965), (6591, 39660), (6610, 39546), (7605, 34372), (7932, 32955), (8593, 30420), (8788, 29745), (9915, 26364), (10140, 25779), (10985, 23796), (11898, 21970), (13182, 19830), (13220, 19773), (15210, 17186)]