28400931

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 47567520

約数和(自身を除く): 19166589

約数列:

[1, 3, 9, 13, 17, 39, 51, 109, 117, 131, 153, 221, 327, 393, 663, 981, 1179, 1417, 1703, 1853, 1989, 2227, 4251, 5109, 5559, 6681, 12753, 14279, 15327, 16677, 20043, 24089, 28951, 42837, 72267, 86853, 128511, 185627, 216801, 242743, 260559, 556881, 728229, 1670643, 2184687, 3155659, 9466977, 28400931]

約数ペア:

[(1, 28400931), (3, 9466977), (9, 3155659), (13, 2184687), (17, 1670643), (39, 728229), (51, 556881), (109, 260559), (117, 242743), (131, 216801), (153, 185627), (221, 128511), (327, 86853), (393, 72267), (663, 42837), (981, 28951), (1179, 24089), (1417, 20043), (1703, 16677), (1853, 15327), (1989, 14279), (2227, 12753), (4251, 6681), (5109, 5559)]