81520048

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{30509}}^1$

素因数の和:30684

約数の個数: 20

約数和(自身を含む): 158896080

約数和(自身を除く): 77376032

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 30509, 61018, 122036, 244072, 488144, 5095003, 10190006, 20380012, 40760024, 81520048]

約数ペア:

[(1, 81520048), (2, 40760024), (4, 20380012), (8, 10190006), (16, 5095003), (167, 488144), (334, 244072), (668, 122036), (1336, 61018), (2672, 30509)]