77898140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 167378400

約数和(自身を除く): 89480260

約数列:

[1, 2, 4, 5, 10, 20, 89, 107, 178, 214, 356, 409, 428, 445, 535, 818, 890, 1070, 1636, 1780, 2045, 2140, 4090, 8180, 9523, 19046, 36401, 38092, 43763, 47615, 72802, 87526, 95230, 145604, 175052, 182005, 190460, 218815, 364010, 437630, 728020, 875260, 3894907, 7789814, 15579628, 19474535, 38949070, 77898140]

約数ペア:

[(1, 77898140), (2, 38949070), (4, 19474535), (5, 15579628), (10, 7789814), (20, 3894907), (89, 875260), (107, 728020), (178, 437630), (214, 364010), (356, 218815), (409, 190460), (428, 182005), (445, 175052), (535, 145604), (818, 95230), (890, 87526), (1070, 72802), (1636, 47615), (1780, 43763), (2045, 38092), (2140, 36401), (4090, 19046), (8180, 9523)]