20671800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:413

約数の個数: 96

約数和(自身を含む): 64817280

約数和(自身を除く): 44145480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 131, 150, 200, 262, 263, 300, 393, 524, 526, 600, 655, 786, 789, 1048, 1052, 1310, 1315, 1572, 1578, 1965, 2104, 2620, 2630, 3144, 3156, 3275, 3930, 3945, 5240, 5260, 6312, 6550, 6575, 7860, 7890, 9825, 10520, 13100, 13150, 15720, 15780, 19650, 19725, 26200, 26300, 31560, 34453, 39300, 39450, 52600, 68906, 78600, 78900, 103359, 137812, 157800, 172265, 206718, 275624, 344530, 413436, 516795, 689060, 826872, 861325, 1033590, 1378120, 1722650, 2067180, 2583975, 3445300, 4134360, 5167950, 6890600, 10335900, 20671800]

約数ペア:

[(1, 20671800), (2, 10335900), (3, 6890600), (4, 5167950), (5, 4134360), (6, 3445300), (8, 2583975), (10, 2067180), (12, 1722650), (15, 1378120), (20, 1033590), (24, 861325), (25, 826872), (30, 689060), (40, 516795), (50, 413436), (60, 344530), (75, 275624), (100, 206718), (120, 172265), (131, 157800), (150, 137812), (200, 103359), (262, 78900), (263, 78600), (300, 68906), (393, 52600), (524, 39450), (526, 39300), (600, 34453), (655, 31560), (786, 26300), (789, 26200), (1048, 19725), (1052, 19650), (1310, 15780), (1315, 15720), (1572, 13150), (1578, 13100), (1965, 10520), (2104, 9825), (2620, 7890), (2630, 7860), (3144, 6575), (3156, 6550), (3275, 6312), (3930, 5260), (3945, 5240)]