18657620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1327}}^1$

素因数の和:1392

約数の個数: 48

約数和(自身を含む): 42389760

約数和(自身を除く): 23732140

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1327, 1406, 2654, 2812, 3515, 5308, 6635, 7030, 13270, 14060, 25213, 26540, 49099, 50426, 98198, 100852, 126065, 196396, 245495, 252130, 490990, 504260, 932881, 981980, 1865762, 3731524, 4664405, 9328810, 18657620]

約数ペア:

[(1, 18657620), (2, 9328810), (4, 4664405), (5, 3731524), (10, 1865762), (19, 981980), (20, 932881), (37, 504260), (38, 490990), (74, 252130), (76, 245495), (95, 196396), (148, 126065), (185, 100852), (190, 98198), (370, 50426), (380, 49099), (703, 26540), (740, 25213), (1327, 14060), (1406, 13270), (2654, 7030), (2812, 6635), (3515, 5308)]