19974880

素因数分解:

$2^5\times 5^1\times {\mathrm{131}}^1\times {\mathrm{953}}^1$

素因数の和:1099

約数の個数: 48

約数和(自身を含む): 47600784

約数和(自身を除く): 27625904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 131, 160, 262, 524, 655, 953, 1048, 1310, 1906, 2096, 2620, 3812, 4192, 4765, 5240, 7624, 9530, 10480, 15248, 19060, 20960, 30496, 38120, 76240, 124843, 152480, 249686, 499372, 624215, 998744, 1248430, 1997488, 2496860, 3994976, 4993720, 9987440, 19974880]

約数ペア:

[(1, 19974880), (2, 9987440), (4, 4993720), (5, 3994976), (8, 2496860), (10, 1997488), (16, 1248430), (20, 998744), (32, 624215), (40, 499372), (80, 249686), (131, 152480), (160, 124843), (262, 76240), (524, 38120), (655, 30496), (953, 20960), (1048, 19060), (1310, 15248), (1906, 10480), (2096, 9530), (2620, 7624), (3812, 5240), (4192, 4765)]