19720696

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{509}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 38556000

約数和(自身を除く): 18835304

約数列:

[1, 2, 4, 8, 29, 58, 116, 167, 232, 334, 509, 668, 1018, 1336, 2036, 4072, 4843, 9686, 14761, 19372, 29522, 38744, 59044, 85003, 118088, 170006, 340012, 680024, 2465087, 4930174, 9860348, 19720696]

約数ペア:

[(1, 19720696), (2, 9860348), (4, 4930174), (8, 2465087), (29, 680024), (58, 340012), (116, 170006), (167, 118088), (232, 85003), (334, 59044), (509, 38744), (668, 29522), (1018, 19372), (1336, 14761), (2036, 9686), (4072, 4843)]