81969660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:468

約数の個数: 144

約数和(自身を含む): 264176640

約数和(自身を除く): 182206980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 41, 45, 58, 60, 82, 87, 90, 116, 123, 145, 164, 174, 180, 205, 246, 261, 290, 348, 369, 383, 410, 435, 492, 522, 580, 615, 738, 766, 820, 870, 1044, 1149, 1189, 1230, 1305, 1476, 1532, 1740, 1845, 1915, 2298, 2378, 2460, 2610, 3447, 3567, 3690, 3830, 4596, 4756, 5220, 5745, 5945, 6894, 7134, 7380, 7660, 10701, 11107, 11490, 11890, 13788, 14268, 15703, 17235, 17835, 21402, 22214, 22980, 23780, 31406, 33321, 34470, 35670, 42804, 44428, 47109, 53505, 55535, 62812, 66642, 68940, 71340, 78515, 94218, 99963, 107010, 111070, 133284, 141327, 157030, 166605, 188436, 199926, 214020, 222140, 235545, 282654, 314060, 333210, 399852, 455387, 471090, 499815, 565308, 666420, 706635, 910774, 942180, 999630, 1366161, 1413270, 1821548, 1999260, 2276935, 2732322, 2826540, 4098483, 4553870, 5464644, 6830805, 8196966, 9107740, 13661610, 16393932, 20492415, 27323220, 40984830, 81969660]

約数ペア:

[(1, 81969660), (2, 40984830), (3, 27323220), (4, 20492415), (5, 16393932), (6, 13661610), (9, 9107740), (10, 8196966), (12, 6830805), (15, 5464644), (18, 4553870), (20, 4098483), (29, 2826540), (30, 2732322), (36, 2276935), (41, 1999260), (45, 1821548), (58, 1413270), (60, 1366161), (82, 999630), (87, 942180), (90, 910774), (116, 706635), (123, 666420), (145, 565308), (164, 499815), (174, 471090), (180, 455387), (205, 399852), (246, 333210), (261, 314060), (290, 282654), (348, 235545), (369, 222140), (383, 214020), (410, 199926), (435, 188436), (492, 166605), (522, 157030), (580, 141327), (615, 133284), (738, 111070), (766, 107010), (820, 99963), (870, 94218), (1044, 78515), (1149, 71340), (1189, 68940), (1230, 66642), (1305, 62812), (1476, 55535), (1532, 53505), (1740, 47109), (1845, 44428), (1915, 42804), (2298, 35670), (2378, 34470), (2460, 33321), (2610, 31406), (3447, 23780), (3567, 22980), (3690, 22214), (3830, 21402), (4596, 17835), (4756, 17235), (5220, 15703), (5745, 14268), (5945, 13788), (6894, 11890), (7134, 11490), (7380, 11107), (7660, 10701)]