18012380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{443}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 40279680

約数和(自身を除く): 22267300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 107, 190, 214, 380, 428, 443, 535, 886, 1070, 1772, 2033, 2140, 2215, 4066, 4430, 8132, 8417, 8860, 10165, 16834, 20330, 33668, 40660, 42085, 47401, 84170, 94802, 168340, 189604, 237005, 474010, 900619, 948020, 1801238, 3602476, 4503095, 9006190, 18012380]

約数ペア:

[(1, 18012380), (2, 9006190), (4, 4503095), (5, 3602476), (10, 1801238), (19, 948020), (20, 900619), (38, 474010), (76, 237005), (95, 189604), (107, 168340), (190, 94802), (214, 84170), (380, 47401), (428, 42085), (443, 40660), (535, 33668), (886, 20330), (1070, 16834), (1772, 10165), (2033, 8860), (2140, 8417), (2215, 8132), (4066, 4430)]