261275280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{155521}}^1$

素因数の和:155544

約数の個数: 80

約数和(自身を含む): 925666944

約数和(自身を除く): 664391664

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 155521, 311042, 466563, 622084, 777605, 933126, 1088647, 1244168, 1555210, 1866252, 2177294, 2332815, 2488336, 3110420, 3265941, 3732504, 4354588, 4665630, 5443235, 6220840, 6531882, 7465008, 8709176, 9331260, 10886470, 12441680, 13063764, 16329705, 17418352, 18662520, 21772940, 26127528, 32659410, 37325040, 43545880, 52255056, 65318820, 87091760, 130637640, 261275280]

約数ペア:

[(1, 261275280), (2, 130637640), (3, 87091760), (4, 65318820), (5, 52255056), (6, 43545880), (7, 37325040), (8, 32659410), (10, 26127528), (12, 21772940), (14, 18662520), (15, 17418352), (16, 16329705), (20, 13063764), (21, 12441680), (24, 10886470), (28, 9331260), (30, 8709176), (35, 7465008), (40, 6531882), (42, 6220840), (48, 5443235), (56, 4665630), (60, 4354588), (70, 3732504), (80, 3265941), (84, 3110420), (105, 2488336), (112, 2332815), (120, 2177294), (140, 1866252), (168, 1555210), (210, 1244168), (240, 1088647), (280, 933126), (336, 777605), (420, 622084), (560, 466563), (840, 311042), (1680, 155521)]