21610215

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 19667385

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 149, 165, 293, 447, 495, 745, 879, 1341, 1465, 1639, 2235, 2637, 3223, 4395, 4917, 6705, 8195, 9669, 13185, 14751, 16115, 24585, 29007, 43657, 48345, 73755, 130971, 145035, 218285, 392913, 480227, 654855, 1440681, 1964565, 2401135, 4322043, 7203405, 21610215]

約数ペア:

[(1, 21610215), (3, 7203405), (5, 4322043), (9, 2401135), (11, 1964565), (15, 1440681), (33, 654855), (45, 480227), (55, 392913), (99, 218285), (149, 145035), (165, 130971), (293, 73755), (447, 48345), (495, 43657), (745, 29007), (879, 24585), (1341, 16115), (1465, 14751), (1639, 13185), (2235, 9669), (2637, 8195), (3223, 6705), (4395, 4917)]