81647860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{2503}}^1$

素因数の和:2752

約数の個数: 48

約数和(自身を含む): 196874496

約数和(自身を除く): 115226636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 233, 466, 932, 1165, 1631, 2330, 2503, 3262, 4660, 5006, 6524, 8155, 10012, 12515, 16310, 17521, 25030, 32620, 35042, 50060, 70084, 87605, 175210, 350420, 583199, 1166398, 2332796, 2915995, 4082393, 5831990, 8164786, 11663980, 16329572, 20411965, 40823930, 81647860]

約数ペア:

[(1, 81647860), (2, 40823930), (4, 20411965), (5, 16329572), (7, 11663980), (10, 8164786), (14, 5831990), (20, 4082393), (28, 2915995), (35, 2332796), (70, 1166398), (140, 583199), (233, 350420), (466, 175210), (932, 87605), (1165, 70084), (1631, 50060), (2330, 35042), (2503, 32620), (3262, 25030), (4660, 17521), (5006, 16310), (6524, 12515), (8155, 10012)]