28377027

素因数分解:

$3^3\times 7^2\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 49658400

約数和(自身を除く): 21281373

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 89, 147, 189, 241, 267, 441, 623, 723, 801, 1323, 1687, 1869, 2169, 2403, 4361, 5061, 5607, 6507, 11809, 13083, 15183, 16821, 21449, 35427, 39249, 45549, 64347, 106281, 117747, 150143, 193041, 318843, 450429, 579123, 1051001, 1351287, 3153003, 4053861, 9459009, 28377027]

約数ペア:

[(1, 28377027), (3, 9459009), (7, 4053861), (9, 3153003), (21, 1351287), (27, 1051001), (49, 579123), (63, 450429), (89, 318843), (147, 193041), (189, 150143), (241, 117747), (267, 106281), (441, 64347), (623, 45549), (723, 39249), (801, 35427), (1323, 21449), (1687, 16821), (1869, 15183), (2169, 13083), (2403, 11809), (4361, 6507), (5061, 5607)]