18979440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2551}}^1$

素因数の和:2598

約数の個数: 80

約数和(自身を含む): 60758016

約数和(自身を除く): 41778576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2551, 3720, 5102, 7440, 7653, 10204, 12755, 15306, 20408, 25510, 30612, 38265, 40816, 51020, 61224, 76530, 79081, 102040, 122448, 153060, 158162, 204080, 237243, 306120, 316324, 395405, 474486, 612240, 632648, 790810, 948972, 1186215, 1265296, 1581620, 1897944, 2372430, 3163240, 3795888, 4744860, 6326480, 9489720, 18979440]

約数ペア:

[(1, 18979440), (2, 9489720), (3, 6326480), (4, 4744860), (5, 3795888), (6, 3163240), (8, 2372430), (10, 1897944), (12, 1581620), (15, 1265296), (16, 1186215), (20, 948972), (24, 790810), (30, 632648), (31, 612240), (40, 474486), (48, 395405), (60, 316324), (62, 306120), (80, 237243), (93, 204080), (120, 158162), (124, 153060), (155, 122448), (186, 102040), (240, 79081), (248, 76530), (310, 61224), (372, 51020), (465, 40816), (496, 38265), (620, 30612), (744, 25510), (930, 20408), (1240, 15306), (1488, 12755), (1860, 10204), (2480, 7653), (2551, 7440), (3720, 5102)]