81223920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1163}}^1$

素因数の和:1279

約数の個数: 120

約数和(自身を含む): 275826096

約数和(自身を除く): 194602176

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 97, 120, 144, 180, 194, 240, 291, 360, 388, 485, 582, 720, 776, 873, 970, 1163, 1164, 1455, 1552, 1746, 1940, 2326, 2328, 2910, 3489, 3492, 3880, 4365, 4652, 4656, 5815, 5820, 6978, 6984, 7760, 8730, 9304, 10467, 11630, 11640, 13956, 13968, 17445, 17460, 18608, 20934, 23260, 23280, 27912, 34890, 34920, 41868, 46520, 52335, 55824, 69780, 69840, 83736, 93040, 104670, 112811, 139560, 167472, 209340, 225622, 279120, 338433, 418680, 451244, 564055, 676866, 837360, 902488, 1015299, 1128110, 1353732, 1692165, 1804976, 2030598, 2256220, 2707464, 3384330, 4061196, 4512440, 5076495, 5414928, 6768660, 8122392, 9024880, 10152990, 13537320, 16244784, 20305980, 27074640, 40611960, 81223920]

約数ペア:

[(1, 81223920), (2, 40611960), (3, 27074640), (4, 20305980), (5, 16244784), (6, 13537320), (8, 10152990), (9, 9024880), (10, 8122392), (12, 6768660), (15, 5414928), (16, 5076495), (18, 4512440), (20, 4061196), (24, 3384330), (30, 2707464), (36, 2256220), (40, 2030598), (45, 1804976), (48, 1692165), (60, 1353732), (72, 1128110), (80, 1015299), (90, 902488), (97, 837360), (120, 676866), (144, 564055), (180, 451244), (194, 418680), (240, 338433), (291, 279120), (360, 225622), (388, 209340), (485, 167472), (582, 139560), (720, 112811), (776, 104670), (873, 93040), (970, 83736), (1163, 69840), (1164, 69780), (1455, 55824), (1552, 52335), (1746, 46520), (1940, 41868), (2326, 34920), (2328, 34890), (2910, 27912), (3489, 23280), (3492, 23260), (3880, 20934), (4365, 18608), (4652, 17460), (4656, 17445), (5815, 13968), (5820, 13956), (6978, 11640), (6984, 11630), (7760, 10467), (8730, 9304)]