21127095

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 42094080

約数和(自身を除く): 20966985

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 41, 45, 55, 99, 123, 135, 165, 205, 297, 347, 369, 451, 495, 615, 1041, 1107, 1353, 1485, 1735, 1845, 2255, 3123, 3817, 4059, 5205, 5535, 6765, 9369, 11451, 12177, 14227, 15615, 19085, 20295, 34353, 42681, 46845, 57255, 60885, 71135, 103059, 128043, 156497, 171765, 213405, 384129, 469491, 515295, 640215, 782485, 1408473, 1920645, 2347455, 4225419, 7042365, 21127095]

約数ペア:

[(1, 21127095), (3, 7042365), (5, 4225419), (9, 2347455), (11, 1920645), (15, 1408473), (27, 782485), (33, 640215), (41, 515295), (45, 469491), (55, 384129), (99, 213405), (123, 171765), (135, 156497), (165, 128043), (205, 103059), (297, 71135), (347, 60885), (369, 57255), (451, 46845), (495, 42681), (615, 34353), (1041, 20295), (1107, 19085), (1353, 15615), (1485, 14227), (1735, 12177), (1845, 11451), (2255, 9369), (3123, 6765), (3817, 5535), (4059, 5205)]