21686940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1217}}^1$

素因数の和:1249

約数の個数: 120

約数和(自身を含む): 74278512

約数和(自身を除く): 52591572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 270, 297, 324, 330, 396, 405, 495, 540, 594, 660, 810, 891, 990, 1188, 1217, 1485, 1620, 1782, 1980, 2434, 2970, 3564, 3651, 4455, 4868, 5940, 6085, 7302, 8910, 10953, 12170, 13387, 14604, 17820, 18255, 21906, 24340, 26774, 32859, 36510, 40161, 43812, 53548, 54765, 65718, 66935, 73020, 80322, 98577, 109530, 120483, 131436, 133870, 160644, 164295, 197154, 200805, 219060, 240966, 267740, 328590, 361449, 394308, 401610, 481932, 492885, 602415, 657180, 722898, 803220, 985770, 1084347, 1204830, 1445796, 1807245, 1971540, 2168694, 2409660, 3614490, 4337388, 5421735, 7228980, 10843470, 21686940]

約数ペア:

[(1, 21686940), (2, 10843470), (3, 7228980), (4, 5421735), (5, 4337388), (6, 3614490), (9, 2409660), (10, 2168694), (11, 1971540), (12, 1807245), (15, 1445796), (18, 1204830), (20, 1084347), (22, 985770), (27, 803220), (30, 722898), (33, 657180), (36, 602415), (44, 492885), (45, 481932), (54, 401610), (55, 394308), (60, 361449), (66, 328590), (81, 267740), (90, 240966), (99, 219060), (108, 200805), (110, 197154), (132, 164295), (135, 160644), (162, 133870), (165, 131436), (180, 120483), (198, 109530), (220, 98577), (270, 80322), (297, 73020), (324, 66935), (330, 65718), (396, 54765), (405, 53548), (495, 43812), (540, 40161), (594, 36510), (660, 32859), (810, 26774), (891, 24340), (990, 21906), (1188, 18255), (1217, 17820), (1485, 14604), (1620, 13387), (1782, 12170), (1980, 10953), (2434, 8910), (2970, 7302), (3564, 6085), (3651, 5940), (4455, 4868)]