7211115

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 13231296

約数和(自身を除く): 6020181

約数列:

[1, 3, 5, 9, 15, 37, 45, 61, 71, 111, 183, 185, 213, 305, 333, 355, 549, 555, 639, 915, 1065, 1665, 2257, 2627, 2745, 3195, 4331, 6771, 7881, 11285, 12993, 13135, 20313, 21655, 23643, 33855, 38979, 39405, 64965, 101565, 118215, 160247, 194895, 480741, 801235, 1442223, 2403705, 7211115]

約数ペア:

[(1, 7211115), (3, 2403705), (5, 1442223), (9, 801235), (15, 480741), (37, 194895), (45, 160247), (61, 118215), (71, 101565), (111, 64965), (183, 39405), (185, 38979), (213, 33855), (305, 23643), (333, 21655), (355, 20313), (549, 13135), (555, 12993), (639, 11285), (915, 7881), (1065, 6771), (1665, 4331), (2257, 3195), (2627, 2745)]