20967158205

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1\times {\mathrm{461}}^1$

素因数の和:809

約数の個数: 160

約数和(自身を含む): 43920188928

約数和(自身を除く): 22953030723

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 61, 63, 81, 105, 135, 183, 189, 263, 305, 315, 405, 427, 461, 549, 567, 789, 915, 945, 1281, 1315, 1383, 1647, 1841, 2135, 2305, 2367, 2745, 2835, 3227, 3843, 3945, 4149, 4941, 5523, 6405, 6915, 7101, 8235, 9205, 9681, 11529, 11835, 12447, 16043, 16135, 16569, 19215, 20745, 21303, 24705, 27615, 28121, 29043, 34587, 35505, 37341, 48129, 48405, 49707, 57645, 62235, 80215, 82845, 84363, 87129, 106515, 112301, 121243, 140605, 144387, 145215, 149121, 172935, 186705, 196847, 240645, 248535, 253089, 261387, 336903, 363729, 421815, 433161, 435645, 561505, 590541, 606215, 721935, 745605, 759267, 848701, 984235, 1010709, 1091187, 1265445, 1299483, 1306935, 1684515, 1771623, 1818645, 2165805, 2277801, 2546103, 2952705, 3032127, 3273561, 3796335, 4243505, 5053545, 5314869, 5455935, 6497415, 7395823, 7638309, 8858115, 9096381, 9820683, 11389005, 12730515, 15160635, 15944607, 16367805, 22187469, 22914927, 26574345, 36979115, 38191545, 45481905, 49103415, 51770761, 66562407, 68744781, 79723035, 110937345, 114574635, 155312283, 199687221, 258853805, 332812035, 343723905, 465936849, 599061663, 776561415, 998436105, 1397810547, 2329684245, 2995308315, 4193431641, 6989052735, 20967158205]

約数ペア:

[(1, 20967158205), (3, 6989052735), (5, 4193431641), (7, 2995308315), (9, 2329684245), (15, 1397810547), (21, 998436105), (27, 776561415), (35, 599061663), (45, 465936849), (61, 343723905), (63, 332812035), (81, 258853805), (105, 199687221), (135, 155312283), (183, 114574635), (189, 110937345), (263, 79723035), (305, 68744781), (315, 66562407), (405, 51770761), (427, 49103415), (461, 45481905), (549, 38191545), (567, 36979115), (789, 26574345), (915, 22914927), (945, 22187469), (1281, 16367805), (1315, 15944607), (1383, 15160635), (1647, 12730515), (1841, 11389005), (2135, 9820683), (2305, 9096381), (2367, 8858115), (2745, 7638309), (2835, 7395823), (3227, 6497415), (3843, 5455935), (3945, 5314869), (4149, 5053545), (4941, 4243505), (5523, 3796335), (6405, 3273561), (6915, 3032127), (7101, 2952705), (8235, 2546103), (9205, 2277801), (9681, 2165805), (11529, 1818645), (11835, 1771623), (12447, 1684515), (16043, 1306935), (16135, 1299483), (16569, 1265445), (19215, 1091187), (20745, 1010709), (21303, 984235), (24705, 848701), (27615, 759267), (28121, 745605), (29043, 721935), (34587, 606215), (35505, 590541), (37341, 561505), (48129, 435645), (48405, 433161), (49707, 421815), (57645, 363729), (62235, 336903), (80215, 261387), (82845, 253089), (84363, 248535), (87129, 240645), (106515, 196847), (112301, 186705), (121243, 172935), (140605, 149121), (144387, 145215)]