18943480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15277}}^1$

素因数の和:15319

約数の個数: 32

約数和(自身を含む): 44000640

約数和(自身を除く): 25057160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15277, 30554, 61108, 76385, 122216, 152770, 305540, 473587, 611080, 947174, 1894348, 2367935, 3788696, 4735870, 9471740, 18943480]

約数ペア:

[(1, 18943480), (2, 9471740), (4, 4735870), (5, 3788696), (8, 2367935), (10, 1894348), (20, 947174), (31, 611080), (40, 473587), (62, 305540), (124, 152770), (155, 122216), (248, 76385), (310, 61108), (620, 30554), (1240, 15277)]