80902840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49331}}^1$

素因数の和:49383

約数の個数: 32

約数和(自身を含む): 186474960

約数和(自身を除く): 105572120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49331, 98662, 197324, 246655, 394648, 493310, 986620, 1973240, 2022571, 4045142, 8090284, 10112855, 16180568, 20225710, 40451420, 80902840]

約数ペア:

[(1, 80902840), (2, 40451420), (4, 20225710), (5, 16180568), (8, 10112855), (10, 8090284), (20, 4045142), (40, 2022571), (41, 1973240), (82, 986620), (164, 493310), (205, 394648), (328, 246655), (410, 197324), (820, 98662), (1640, 49331)]