815320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 2138400

約数和(自身を除く): 1323080

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 109, 110, 136, 170, 187, 218, 220, 340, 374, 436, 440, 545, 680, 748, 872, 935, 1090, 1199, 1496, 1853, 1870, 2180, 2398, 3706, 3740, 4360, 4796, 5995, 7412, 7480, 9265, 9592, 11990, 14824, 18530, 20383, 23980, 37060, 40766, 47960, 74120, 81532, 101915, 163064, 203830, 407660, 815320]

約数ペア:

[(1, 815320), (2, 407660), (4, 203830), (5, 163064), (8, 101915), (10, 81532), (11, 74120), (17, 47960), (20, 40766), (22, 37060), (34, 23980), (40, 20383), (44, 18530), (55, 14824), (68, 11990), (85, 9592), (88, 9265), (109, 7480), (110, 7412), (136, 5995), (170, 4796), (187, 4360), (218, 3740), (220, 3706), (340, 2398), (374, 2180), (436, 1870), (440, 1853), (545, 1496), (680, 1199), (748, 1090), (872, 935)]