3949840

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:619

約数の個数: 40

約数和(自身を含む): 9296280

約数和(自身を除く): 5346440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 509, 776, 970, 1018, 1552, 1940, 2036, 2545, 3880, 4072, 5090, 7760, 8144, 10180, 20360, 40720, 49373, 98746, 197492, 246865, 394984, 493730, 789968, 987460, 1974920, 3949840]

約数ペア:

[(1, 3949840), (2, 1974920), (4, 987460), (5, 789968), (8, 493730), (10, 394984), (16, 246865), (20, 197492), (40, 98746), (80, 49373), (97, 40720), (194, 20360), (388, 10180), (485, 8144), (509, 7760), (776, 5090), (970, 4072), (1018, 3880), (1552, 2545), (1940, 2036)]