212170980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{72167}}^1$

素因数の和:72193

約数の個数: 72

約数和(自身を含む): 691080768

約数和(自身を除く): 478909788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 72167, 144334, 216501, 288668, 360835, 433002, 505169, 721670, 866004, 1010338, 1082505, 1443340, 1515507, 2020676, 2165010, 2525845, 3031014, 3536183, 4330020, 5051690, 6062028, 7072366, 7577535, 10103380, 10608549, 14144732, 15155070, 17680915, 21217098, 30310140, 35361830, 42434196, 53042745, 70723660, 106085490, 212170980]

約数ペア:

[(1, 212170980), (2, 106085490), (3, 70723660), (4, 53042745), (5, 42434196), (6, 35361830), (7, 30310140), (10, 21217098), (12, 17680915), (14, 15155070), (15, 14144732), (20, 10608549), (21, 10103380), (28, 7577535), (30, 7072366), (35, 6062028), (42, 5051690), (49, 4330020), (60, 3536183), (70, 3031014), (84, 2525845), (98, 2165010), (105, 2020676), (140, 1515507), (147, 1443340), (196, 1082505), (210, 1010338), (245, 866004), (294, 721670), (420, 505169), (490, 433002), (588, 360835), (735, 288668), (980, 216501), (1470, 144334), (2940, 72167)]