721215

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:100

約数の個数: 48

約数和(自身を含む): 1437696

約数和(自身を除く): 716481

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 47, 55, 93, 99, 141, 155, 165, 235, 279, 341, 423, 465, 495, 517, 705, 1023, 1395, 1457, 1551, 1705, 2115, 2585, 3069, 4371, 4653, 5115, 7285, 7755, 13113, 15345, 16027, 21855, 23265, 48081, 65565, 80135, 144243, 240405, 721215]

約数ペア:

[(1, 721215), (3, 240405), (5, 144243), (9, 80135), (11, 65565), (15, 48081), (31, 23265), (33, 21855), (45, 16027), (47, 15345), (55, 13113), (93, 7755), (99, 7285), (141, 5115), (155, 4653), (165, 4371), (235, 3069), (279, 2585), (341, 2115), (423, 1705), (465, 1551), (495, 1457), (517, 1395), (705, 1023)]