21387060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{907}}^1$

素因数の和:1053

約数の個数: 72

約数和(自身を含む): 65441376

約数和(自身を除く): 44054316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 907, 1179, 1310, 1572, 1814, 1965, 2358, 2620, 2721, 3628, 3930, 4535, 4716, 5442, 5895, 7860, 8163, 9070, 10884, 11790, 13605, 16326, 18140, 23580, 27210, 32652, 40815, 54420, 81630, 118817, 163260, 237634, 356451, 475268, 594085, 712902, 1069353, 1188170, 1425804, 1782255, 2138706, 2376340, 3564510, 4277412, 5346765, 7129020, 10693530, 21387060]

約数ペア:

[(1, 21387060), (2, 10693530), (3, 7129020), (4, 5346765), (5, 4277412), (6, 3564510), (9, 2376340), (10, 2138706), (12, 1782255), (15, 1425804), (18, 1188170), (20, 1069353), (30, 712902), (36, 594085), (45, 475268), (60, 356451), (90, 237634), (131, 163260), (180, 118817), (262, 81630), (393, 54420), (524, 40815), (655, 32652), (786, 27210), (907, 23580), (1179, 18140), (1310, 16326), (1572, 13605), (1814, 11790), (1965, 10884), (2358, 9070), (2620, 8163), (2721, 7860), (3628, 5895), (3930, 5442), (4535, 4716)]