18638536

素因数分解:

$2^3\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1993}}^1$

素因数の和:2173

約数の個数: 32

約数和(自身を含む): 40199040

約数和(自身を除く): 21560504

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 167, 334, 668, 1169, 1336, 1993, 2338, 3986, 4676, 7972, 9352, 13951, 15944, 27902, 55804, 111608, 332831, 665662, 1331324, 2329817, 2662648, 4659634, 9319268, 18638536]

約数ペア:

[(1, 18638536), (2, 9319268), (4, 4659634), (7, 2662648), (8, 2329817), (14, 1331324), (28, 665662), (56, 332831), (167, 111608), (334, 55804), (668, 27902), (1169, 15944), (1336, 13951), (1993, 9352), (2338, 7972), (3986, 4676)]