155543320

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{19739}}^1$

素因数の和:19947

約数の個数: 32

約数和(自身を含む): 351766800

約数和(自身を除く): 196223480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 19739, 39478, 78956, 98695, 157912, 197390, 394780, 789560, 3888583, 7777166, 15554332, 19442915, 31108664, 38885830, 77771660, 155543320]

約数ペア:

[(1, 155543320), (2, 77771660), (4, 38885830), (5, 31108664), (8, 19442915), (10, 15554332), (20, 7777166), (40, 3888583), (197, 789560), (394, 394780), (788, 197390), (985, 157912), (1576, 98695), (1970, 78956), (3940, 39478), (7880, 19739)]