66438250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 133436160

約数和(自身を除く): 66997910

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 71, 95, 125, 142, 190, 197, 250, 355, 394, 475, 710, 950, 985, 1349, 1775, 1970, 2375, 2698, 3550, 3743, 4750, 4925, 6745, 7486, 8875, 9850, 13490, 13987, 17750, 18715, 24625, 27974, 33725, 37430, 49250, 67450, 69935, 93575, 139870, 168625, 187150, 265753, 337250, 349675, 467875, 531506, 699350, 935750, 1328765, 1748375, 2657530, 3496750, 6643825, 13287650, 33219125, 66438250]

約数ペア:

[(1, 66438250), (2, 33219125), (5, 13287650), (10, 6643825), (19, 3496750), (25, 2657530), (38, 1748375), (50, 1328765), (71, 935750), (95, 699350), (125, 531506), (142, 467875), (190, 349675), (197, 337250), (250, 265753), (355, 187150), (394, 168625), (475, 139870), (710, 93575), (950, 69935), (985, 67450), (1349, 49250), (1775, 37430), (1970, 33725), (2375, 27974), (2698, 24625), (3550, 18715), (3743, 17750), (4750, 13987), (4925, 13490), (6745, 9850), (7486, 8875)]