66606520

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 155520000

約数和(自身を除く): 88913480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 94, 142, 188, 235, 284, 355, 376, 470, 499, 568, 710, 940, 998, 1420, 1880, 1996, 2495, 2840, 3337, 3992, 4990, 6674, 9980, 13348, 16685, 19960, 23453, 26696, 33370, 35429, 46906, 66740, 70858, 93812, 117265, 133480, 141716, 177145, 187624, 234530, 283432, 354290, 469060, 708580, 938120, 1417160, 1665163, 3330326, 6660652, 8325815, 13321304, 16651630, 33303260, 66606520]

約数ペア:

[(1, 66606520), (2, 33303260), (4, 16651630), (5, 13321304), (8, 8325815), (10, 6660652), (20, 3330326), (40, 1665163), (47, 1417160), (71, 938120), (94, 708580), (142, 469060), (188, 354290), (235, 283432), (284, 234530), (355, 187624), (376, 177145), (470, 141716), (499, 133480), (568, 117265), (710, 93812), (940, 70858), (998, 66740), (1420, 46906), (1880, 35429), (1996, 33370), (2495, 26696), (2840, 23453), (3337, 19960), (3992, 16685), (4990, 13348), (6674, 9980)]