18270875

素因数分解:

$5^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:205

約数の個数: 48

約数和(自身を含む): 28098720

約数和(自身を除く): 9827845

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 125, 133, 157, 175, 245, 475, 665, 785, 875, 931, 1099, 1225, 2375, 2983, 3325, 3925, 4655, 5495, 6125, 7693, 14915, 16625, 19625, 20881, 23275, 27475, 38465, 74575, 104405, 116375, 137375, 146167, 192325, 372875, 522025, 730835, 961625, 2610125, 3654175, 18270875]

約数ペア:

[(1, 18270875), (5, 3654175), (7, 2610125), (19, 961625), (25, 730835), (35, 522025), (49, 372875), (95, 192325), (125, 146167), (133, 137375), (157, 116375), (175, 104405), (245, 74575), (475, 38465), (665, 27475), (785, 23275), (875, 20881), (931, 19625), (1099, 16625), (1225, 14915), (2375, 7693), (2983, 6125), (3325, 5495), (3925, 4655)]