16990215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:101

約数の個数: 64

約数和(自身を含む): 32044032

約数和(自身を除く): 15053817

約数列:

[1, 3, 5, 11, 15, 23, 33, 37, 55, 69, 111, 115, 121, 165, 185, 253, 345, 363, 407, 555, 605, 759, 851, 1221, 1265, 1331, 1815, 2035, 2553, 2783, 3795, 3993, 4255, 4477, 6105, 6655, 8349, 9361, 12765, 13431, 13915, 19965, 22385, 28083, 30613, 41745, 46805, 49247, 67155, 91839, 102971, 140415, 147741, 153065, 246235, 308913, 459195, 514855, 738705, 1132681, 1544565, 3398043, 5663405, 16990215]

約数ペア:

[(1, 16990215), (3, 5663405), (5, 3398043), (11, 1544565), (15, 1132681), (23, 738705), (33, 514855), (37, 459195), (55, 308913), (69, 246235), (111, 153065), (115, 147741), (121, 140415), (165, 102971), (185, 91839), (253, 67155), (345, 49247), (363, 46805), (407, 41745), (555, 30613), (605, 28083), (759, 22385), (851, 19965), (1221, 13915), (1265, 13431), (1331, 12765), (1815, 9361), (2035, 8349), (2553, 6655), (2783, 6105), (3795, 4477), (3993, 4255)]