18754540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1229}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 45460800

約数和(自身を除く): 26706260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1229, 1526, 2180, 2458, 3052, 3815, 4916, 6145, 7630, 8603, 12290, 15260, 17206, 24580, 34412, 43015, 86030, 133961, 172060, 267922, 535844, 669805, 937727, 1339610, 1875454, 2679220, 3750908, 4688635, 9377270, 18754540]

約数ペア:

[(1, 18754540), (2, 9377270), (4, 4688635), (5, 3750908), (7, 2679220), (10, 1875454), (14, 1339610), (20, 937727), (28, 669805), (35, 535844), (70, 267922), (109, 172060), (140, 133961), (218, 86030), (436, 43015), (545, 34412), (763, 24580), (1090, 17206), (1229, 15260), (1526, 12290), (2180, 8603), (2458, 7630), (3052, 6145), (3815, 4916)]