15625720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2089}}^1$

素因数の和:2128

約数の個数: 64

約数和(自身を含む): 40629600

約数和(自身を除く): 25003880

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2089, 3740, 4178, 7480, 8356, 10445, 16712, 20890, 22979, 35513, 41780, 45958, 71026, 83560, 91916, 114895, 142052, 177565, 183832, 229790, 284104, 355130, 390643, 459580, 710260, 781286, 919160, 1420520, 1562572, 1953215, 3125144, 3906430, 7812860, 15625720]

約数ペア:

[(1, 15625720), (2, 7812860), (4, 3906430), (5, 3125144), (8, 1953215), (10, 1562572), (11, 1420520), (17, 919160), (20, 781286), (22, 710260), (34, 459580), (40, 390643), (44, 355130), (55, 284104), (68, 229790), (85, 183832), (88, 177565), (110, 142052), (136, 114895), (170, 91916), (187, 83560), (220, 71026), (340, 45958), (374, 41780), (440, 35513), (680, 22979), (748, 20890), (935, 16712), (1496, 10445), (1870, 8356), (2089, 7480), (3740, 4178)]