20502160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1181}}^1$

素因数の和:1232

約数の個数: 80

約数和(自身を含む): 56282112

約数和(自身を除く): 35779952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1181, 1240, 1736, 2170, 2362, 2480, 3472, 4340, 4724, 5905, 8267, 8680, 9448, 11810, 16534, 17360, 18896, 23620, 33068, 36611, 41335, 47240, 66136, 73222, 82670, 94480, 132272, 146444, 165340, 183055, 256277, 292888, 330680, 366110, 512554, 585776, 661360, 732220, 1025108, 1281385, 1464440, 2050216, 2562770, 2928880, 4100432, 5125540, 10251080, 20502160]

約数ペア:

[(1, 20502160), (2, 10251080), (4, 5125540), (5, 4100432), (7, 2928880), (8, 2562770), (10, 2050216), (14, 1464440), (16, 1281385), (20, 1025108), (28, 732220), (31, 661360), (35, 585776), (40, 512554), (56, 366110), (62, 330680), (70, 292888), (80, 256277), (112, 183055), (124, 165340), (140, 146444), (155, 132272), (217, 94480), (248, 82670), (280, 73222), (310, 66136), (434, 47240), (496, 41335), (560, 36611), (620, 33068), (868, 23620), (1085, 18896), (1181, 17360), (1240, 16534), (1736, 11810), (2170, 9448), (2362, 8680), (2480, 8267), (3472, 5905), (4340, 4724)]