18116980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{857}}^1$

素因数の和:1024

約数の個数: 48

約数和(自身を含む): 43819776

約数和(自身を除く): 25702796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151, 302, 604, 755, 857, 1057, 1510, 1714, 2114, 3020, 3428, 4228, 4285, 5285, 5999, 8570, 10570, 11998, 17140, 21140, 23996, 29995, 59990, 119980, 129407, 258814, 517628, 647035, 905849, 1294070, 1811698, 2588140, 3623396, 4529245, 9058490, 18116980]

約数ペア:

[(1, 18116980), (2, 9058490), (4, 4529245), (5, 3623396), (7, 2588140), (10, 1811698), (14, 1294070), (20, 905849), (28, 647035), (35, 517628), (70, 258814), (140, 129407), (151, 119980), (302, 59990), (604, 29995), (755, 23996), (857, 21140), (1057, 17140), (1510, 11998), (1714, 10570), (2114, 8570), (3020, 5999), (3428, 5285), (4228, 4285)]