319640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 736560

約数和(自身を除く): 416920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 131, 244, 262, 305, 488, 524, 610, 655, 1048, 1220, 1310, 2440, 2620, 5240, 7991, 15982, 31964, 39955, 63928, 79910, 159820, 319640]

約数ペア:

[(1, 319640), (2, 159820), (4, 79910), (5, 63928), (8, 39955), (10, 31964), (20, 15982), (40, 7991), (61, 5240), (122, 2620), (131, 2440), (244, 1310), (262, 1220), (305, 1048), (488, 655), (524, 610)]