20515500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:169

約数の個数: 144

約数和(自身を含む): 66777984

約数和(自身を除く): 46262484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 47, 50, 60, 75, 90, 94, 97, 100, 125, 141, 150, 180, 188, 194, 225, 235, 250, 282, 291, 300, 375, 388, 423, 450, 470, 485, 500, 564, 582, 705, 750, 846, 873, 900, 940, 970, 1125, 1164, 1175, 1410, 1455, 1500, 1692, 1746, 1940, 2115, 2250, 2350, 2425, 2820, 2910, 3492, 3525, 4230, 4365, 4500, 4559, 4700, 4850, 5820, 5875, 7050, 7275, 8460, 8730, 9118, 9700, 10575, 11750, 12125, 13677, 14100, 14550, 17460, 17625, 18236, 21150, 21825, 22795, 23500, 24250, 27354, 29100, 35250, 36375, 41031, 42300, 43650, 45590, 48500, 52875, 54708, 68385, 70500, 72750, 82062, 87300, 91180, 105750, 109125, 113975, 136770, 145500, 164124, 205155, 211500, 218250, 227950, 273540, 341925, 410310, 436500, 455900, 569875, 683850, 820620, 1025775, 1139750, 1367700, 1709625, 2051550, 2279500, 3419250, 4103100, 5128875, 6838500, 10257750, 20515500]

約数ペア:

[(1, 20515500), (2, 10257750), (3, 6838500), (4, 5128875), (5, 4103100), (6, 3419250), (9, 2279500), (10, 2051550), (12, 1709625), (15, 1367700), (18, 1139750), (20, 1025775), (25, 820620), (30, 683850), (36, 569875), (45, 455900), (47, 436500), (50, 410310), (60, 341925), (75, 273540), (90, 227950), (94, 218250), (97, 211500), (100, 205155), (125, 164124), (141, 145500), (150, 136770), (180, 113975), (188, 109125), (194, 105750), (225, 91180), (235, 87300), (250, 82062), (282, 72750), (291, 70500), (300, 68385), (375, 54708), (388, 52875), (423, 48500), (450, 45590), (470, 43650), (485, 42300), (500, 41031), (564, 36375), (582, 35250), (705, 29100), (750, 27354), (846, 24250), (873, 23500), (900, 22795), (940, 21825), (970, 21150), (1125, 18236), (1164, 17625), (1175, 17460), (1410, 14550), (1455, 14100), (1500, 13677), (1692, 12125), (1746, 11750), (1940, 10575), (2115, 9700), (2250, 9118), (2350, 8730), (2425, 8460), (2820, 7275), (2910, 7050), (3492, 5875), (3525, 5820), (4230, 4850), (4365, 4700), (4500, 4559)]