18390440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14831}}^1$

素因数の和:14873

約数の個数: 32

約数和(自身を含む): 42716160

約数和(自身を除く): 24325720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 14831, 29662, 59324, 74155, 118648, 148310, 296620, 459761, 593240, 919522, 1839044, 2298805, 3678088, 4597610, 9195220, 18390440]

約数ペア:

[(1, 18390440), (2, 9195220), (4, 4597610), (5, 3678088), (8, 2298805), (10, 1839044), (20, 919522), (31, 593240), (40, 459761), (62, 296620), (124, 148310), (155, 118648), (248, 74155), (310, 59324), (620, 29662), (1240, 14831)]