21187029280

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{458197}}^1$

素因数の和:458246

約数の個数: 72

約数和(自身を含む): 53172045108

約数和(自身を除く): 31985015828

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 289, 340, 544, 578, 680, 1156, 1360, 1445, 2312, 2720, 2890, 4624, 5780, 9248, 11560, 23120, 46240, 458197, 916394, 1832788, 2290985, 3665576, 4581970, 7331152, 7789349, 9163940, 14662304, 15578698, 18327880, 31157396, 36655760, 38946745, 62314792, 73311520, 77893490, 124629584, 132418933, 155786980, 249259168, 264837866, 311573960, 529675732, 623147920, 662094665, 1059351464, 1246295840, 1324189330, 2118702928, 2648378660, 4237405856, 5296757320, 10593514640, 21187029280]

約数ペア:

[(1, 21187029280), (2, 10593514640), (4, 5296757320), (5, 4237405856), (8, 2648378660), (10, 2118702928), (16, 1324189330), (17, 1246295840), (20, 1059351464), (32, 662094665), (34, 623147920), (40, 529675732), (68, 311573960), (80, 264837866), (85, 249259168), (136, 155786980), (160, 132418933), (170, 124629584), (272, 77893490), (289, 73311520), (340, 62314792), (544, 38946745), (578, 36655760), (680, 31157396), (1156, 18327880), (1360, 15578698), (1445, 14662304), (2312, 9163940), (2720, 7789349), (2890, 7331152), (4624, 4581970), (5780, 3665576), (9248, 2290985), (11560, 1832788), (23120, 916394), (46240, 458197)]