16405840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:308

約数の個数: 80

約数和(自身を含む): 42247296

約数和(自身を除く): 25841456

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 103, 110, 176, 181, 206, 220, 362, 412, 440, 515, 724, 824, 880, 905, 1030, 1133, 1448, 1648, 1810, 1991, 2060, 2266, 2896, 3620, 3982, 4120, 4532, 5665, 7240, 7964, 8240, 9064, 9955, 11330, 14480, 15928, 18128, 18643, 19910, 22660, 31856, 37286, 39820, 45320, 74572, 79640, 90640, 93215, 149144, 159280, 186430, 205073, 298288, 372860, 410146, 745720, 820292, 1025365, 1491440, 1640584, 2050730, 3281168, 4101460, 8202920, 16405840]

約数ペア:

[(1, 16405840), (2, 8202920), (4, 4101460), (5, 3281168), (8, 2050730), (10, 1640584), (11, 1491440), (16, 1025365), (20, 820292), (22, 745720), (40, 410146), (44, 372860), (55, 298288), (80, 205073), (88, 186430), (103, 159280), (110, 149144), (176, 93215), (181, 90640), (206, 79640), (220, 74572), (362, 45320), (412, 39820), (440, 37286), (515, 31856), (724, 22660), (824, 19910), (880, 18643), (905, 18128), (1030, 15928), (1133, 14480), (1448, 11330), (1648, 9955), (1810, 9064), (1991, 8240), (2060, 7964), (2266, 7240), (2896, 5665), (3620, 4532), (3982, 4120)]