19978500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:742

約数の個数: 96

約数和(自身を含む): 61326720

約数和(自身を除く): 41348220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 25, 30, 38, 50, 57, 60, 75, 76, 95, 100, 114, 125, 150, 190, 228, 250, 285, 300, 375, 380, 475, 500, 570, 701, 750, 950, 1140, 1402, 1425, 1500, 1900, 2103, 2375, 2804, 2850, 3505, 4206, 4750, 5700, 7010, 7125, 8412, 9500, 10515, 13319, 14020, 14250, 17525, 21030, 26638, 28500, 35050, 39957, 42060, 52575, 53276, 66595, 70100, 79914, 87625, 105150, 133190, 159828, 175250, 199785, 210300, 262875, 266380, 332975, 350500, 399570, 525750, 665950, 799140, 998925, 1051500, 1331900, 1664875, 1997850, 3329750, 3995700, 4994625, 6659500, 9989250, 19978500]

約数ペア:

[(1, 19978500), (2, 9989250), (3, 6659500), (4, 4994625), (5, 3995700), (6, 3329750), (10, 1997850), (12, 1664875), (15, 1331900), (19, 1051500), (20, 998925), (25, 799140), (30, 665950), (38, 525750), (50, 399570), (57, 350500), (60, 332975), (75, 266380), (76, 262875), (95, 210300), (100, 199785), (114, 175250), (125, 159828), (150, 133190), (190, 105150), (228, 87625), (250, 79914), (285, 70100), (300, 66595), (375, 53276), (380, 52575), (475, 42060), (500, 39957), (570, 35050), (701, 28500), (750, 26638), (950, 21030), (1140, 17525), (1402, 14250), (1425, 14020), (1500, 13319), (1900, 10515), (2103, 9500), (2375, 8412), (2804, 7125), (2850, 7010), (3505, 5700), (4206, 4750)]