81648620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:299

約数の個数: 96

約数和(自身を含む): 193995648

約数和(自身を除く): 112347028

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 53, 68, 85, 92, 106, 115, 170, 197, 212, 230, 265, 340, 391, 394, 460, 530, 782, 788, 901, 985, 1060, 1219, 1564, 1802, 1955, 1970, 2438, 3349, 3604, 3910, 3940, 4505, 4531, 4876, 6095, 6698, 7820, 9010, 9062, 10441, 12190, 13396, 16745, 18020, 18124, 20723, 20882, 22655, 24380, 33490, 41446, 41764, 45310, 52205, 66980, 77027, 82892, 90620, 103615, 104410, 154054, 177497, 207230, 208820, 240143, 308108, 354994, 385135, 414460, 480286, 709988, 770270, 887485, 960572, 1200715, 1540540, 1774970, 2401430, 3549940, 4082431, 4802860, 8164862, 16329724, 20412155, 40824310, 81648620]

約数ペア:

[(1, 81648620), (2, 40824310), (4, 20412155), (5, 16329724), (10, 8164862), (17, 4802860), (20, 4082431), (23, 3549940), (34, 2401430), (46, 1774970), (53, 1540540), (68, 1200715), (85, 960572), (92, 887485), (106, 770270), (115, 709988), (170, 480286), (197, 414460), (212, 385135), (230, 354994), (265, 308108), (340, 240143), (391, 208820), (394, 207230), (460, 177497), (530, 154054), (782, 104410), (788, 103615), (901, 90620), (985, 82892), (1060, 77027), (1219, 66980), (1564, 52205), (1802, 45310), (1955, 41764), (1970, 41446), (2438, 33490), (3349, 24380), (3604, 22655), (3910, 20882), (3940, 20723), (4505, 18124), (4531, 18020), (4876, 16745), (6095, 13396), (6698, 12190), (7820, 10441), (9010, 9062)]