20305980

素因数分解:

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

素因数の和:1275

約数の個数: 72

約数和(自身を含む): 62283312

約数和(自身を除く): 41977332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1163, 1164, 1455, 1746, 1940, 2326, 2910, 3489, 3492, 4365, 4652, 5815, 5820, 6978, 8730, 10467, 11630, 13956, 17445, 17460, 20934, 23260, 34890, 41868, 52335, 69780, 104670, 112811, 209340, 225622, 338433, 451244, 564055, 676866, 1015299, 1128110, 1353732, 1692165, 2030598, 2256220, 3384330, 4061196, 5076495, 6768660, 10152990, 20305980]

約数ペア:

[(1, 20305980), (2, 10152990), (3, 6768660), (4, 5076495), (5, 4061196), (6, 3384330), (9, 2256220), (10, 2030598), (12, 1692165), (15, 1353732), (18, 1128110), (20, 1015299), (30, 676866), (36, 564055), (45, 451244), (60, 338433), (90, 225622), (97, 209340), (180, 112811), (194, 104670), (291, 69780), (388, 52335), (485, 41868), (582, 34890), (873, 23260), (970, 20934), (1163, 17460), (1164, 17445), (1455, 13956), (1746, 11630), (1940, 10467), (2326, 8730), (2910, 6978), (3489, 5820), (3492, 5815), (4365, 4652)]