20977275

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{541}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 38711808

約数和(自身を除く): 17734533

約数列:

[1, 3, 5, 11, 15, 25, 33, 47, 55, 75, 141, 165, 235, 275, 517, 541, 705, 825, 1175, 1551, 1623, 2585, 2705, 3525, 5951, 7755, 8115, 12925, 13525, 17853, 25427, 29755, 38775, 40575, 76281, 89265, 127135, 148775, 279697, 381405, 446325, 635675, 839091, 1398485, 1907025, 4195455, 6992425, 20977275]

約数ペア:

[(1, 20977275), (3, 6992425), (5, 4195455), (11, 1907025), (15, 1398485), (25, 839091), (33, 635675), (47, 446325), (55, 381405), (75, 279697), (141, 148775), (165, 127135), (235, 89265), (275, 76281), (517, 40575), (541, 38775), (705, 29755), (825, 25427), (1175, 17853), (1551, 13525), (1623, 12925), (2585, 8115), (2705, 7755), (3525, 5951)]