21811185

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 41670720

約数和(自身を除く): 19859535

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 139, 165, 317, 417, 495, 695, 951, 1251, 1529, 1585, 2085, 2853, 3487, 4587, 4755, 6255, 7645, 10461, 13761, 14265, 17435, 22935, 31383, 44063, 52305, 68805, 132189, 156915, 220315, 396567, 484693, 660945, 1454079, 1982835, 2423465, 4362237, 7270395, 21811185]

約数ペア:

[(1, 21811185), (3, 7270395), (5, 4362237), (9, 2423465), (11, 1982835), (15, 1454079), (33, 660945), (45, 484693), (55, 396567), (99, 220315), (139, 156915), (165, 132189), (317, 68805), (417, 52305), (495, 44063), (695, 31383), (951, 22935), (1251, 17435), (1529, 14265), (1585, 13761), (2085, 10461), (2853, 7645), (3487, 6255), (4587, 4755)]