21123520

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1$

素因数の和:398

約数の個数: 112

約数和(自身を含む): 58265568

約数和(自身を除く): 37142048

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 320, 340, 352, 353, 374, 440, 544, 680, 704, 706, 748, 880, 935, 1088, 1360, 1412, 1496, 1760, 1765, 1870, 2720, 2824, 2992, 3520, 3530, 3740, 3883, 5440, 5648, 5984, 6001, 7060, 7480, 7766, 11296, 11968, 12002, 14120, 14960, 15532, 19415, 22592, 24004, 28240, 29920, 30005, 31064, 38830, 48008, 56480, 59840, 60010, 62128, 66011, 77660, 96016, 112960, 120020, 124256, 132022, 155320, 192032, 240040, 248512, 264044, 310640, 330055, 384064, 480080, 528088, 621280, 660110, 960160, 1056176, 1242560, 1320220, 1920320, 2112352, 2640440, 4224704, 5280880, 10561760, 21123520]

約数ペア:

[(1, 21123520), (2, 10561760), (4, 5280880), (5, 4224704), (8, 2640440), (10, 2112352), (11, 1920320), (16, 1320220), (17, 1242560), (20, 1056176), (22, 960160), (32, 660110), (34, 621280), (40, 528088), (44, 480080), (55, 384064), (64, 330055), (68, 310640), (80, 264044), (85, 248512), (88, 240040), (110, 192032), (136, 155320), (160, 132022), (170, 124256), (176, 120020), (187, 112960), (220, 96016), (272, 77660), (320, 66011), (340, 62128), (352, 60010), (353, 59840), (374, 56480), (440, 48008), (544, 38830), (680, 31064), (704, 30005), (706, 29920), (748, 28240), (880, 24004), (935, 22592), (1088, 19415), (1360, 15532), (1412, 14960), (1496, 14120), (1760, 12002), (1765, 11968), (1870, 11296), (2720, 7766), (2824, 7480), (2992, 7060), (3520, 6001), (3530, 5984), (3740, 5648), (3883, 5440)]