28426815

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 53654400

約数和(自身を除く): 25227585

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 53, 87, 135, 137, 145, 159, 261, 265, 411, 435, 477, 685, 783, 795, 1233, 1305, 1431, 1537, 2055, 2385, 3699, 3915, 3973, 4611, 6165, 7155, 7261, 7685, 11919, 13833, 18495, 19865, 21783, 23055, 35757, 36305, 41499, 59595, 65349, 69165, 107271, 108915, 178785, 196047, 207495, 210569, 326745, 536355, 631707, 980235, 1052845, 1895121, 3158535, 5685363, 9475605, 28426815]

約数ペア:

[(1, 28426815), (3, 9475605), (5, 5685363), (9, 3158535), (15, 1895121), (27, 1052845), (29, 980235), (45, 631707), (53, 536355), (87, 326745), (135, 210569), (137, 207495), (145, 196047), (159, 178785), (261, 108915), (265, 107271), (411, 69165), (435, 65349), (477, 59595), (685, 41499), (783, 36305), (795, 35757), (1233, 23055), (1305, 21783), (1431, 19865), (1537, 18495), (2055, 13833), (2385, 11919), (3699, 7685), (3915, 7261), (3973, 7155), (4611, 6165)]