43997990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1999}}^1$

素因数の和:2108

約数の個数: 32

約数和(自身を含む): 82944000

約数和(自身を除く): 38946010

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 710, 1999, 2201, 3998, 4402, 9995, 11005, 19990, 22010, 61969, 123938, 141929, 283858, 309845, 619690, 709645, 1419290, 4399799, 8799598, 21998995, 43997990]

約数ペア:

[(1, 43997990), (2, 21998995), (5, 8799598), (10, 4399799), (31, 1419290), (62, 709645), (71, 619690), (142, 309845), (155, 283858), (310, 141929), (355, 123938), (710, 61969), (1999, 22010), (2201, 19990), (3998, 11005), (4402, 9995)]