161531360

素因数分解:

$2^5\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2543}}^1$

素因数の和:2955

約数の個数: 48

約数和(自身を含む): 382729536

約数和(自身を除く): 221198176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 397, 794, 1588, 1985, 2543, 3176, 3970, 5086, 6352, 7940, 10172, 12704, 12715, 15880, 20344, 25430, 31760, 40688, 50860, 63520, 81376, 101720, 203440, 406880, 1009571, 2019142, 4038284, 5047855, 8076568, 10095710, 16153136, 20191420, 32306272, 40382840, 80765680, 161531360]

約数ペア:

[(1, 161531360), (2, 80765680), (4, 40382840), (5, 32306272), (8, 20191420), (10, 16153136), (16, 10095710), (20, 8076568), (32, 5047855), (40, 4038284), (80, 2019142), (160, 1009571), (397, 406880), (794, 203440), (1588, 101720), (1985, 81376), (2543, 63520), (3176, 50860), (3970, 40688), (5086, 31760), (6352, 25430), (7940, 20344), (10172, 15880), (12704, 12715)]