81839440

素因数分解:

$2^4\times 5^1\times {\mathrm{383}}^1\times {\mathrm{2671}}^1$

素因数の和:3067

約数の個数: 40

約数和(自身を含む): 190844928

約数和(自身を除く): 109005488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 383, 766, 1532, 1915, 2671, 3064, 3830, 5342, 6128, 7660, 10684, 13355, 15320, 21368, 26710, 30640, 42736, 53420, 106840, 213680, 1022993, 2045986, 4091972, 5114965, 8183944, 10229930, 16367888, 20459860, 40919720, 81839440]

約数ペア:

[(1, 81839440), (2, 40919720), (4, 20459860), (5, 16367888), (8, 10229930), (10, 8183944), (16, 5114965), (20, 4091972), (40, 2045986), (80, 1022993), (383, 213680), (766, 106840), (1532, 53420), (1915, 42736), (2671, 30640), (3064, 26710), (3830, 21368), (5342, 15320), (6128, 13355), (7660, 10684)]