78859420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1951}}^1$

素因数の和:2050

約数の個数: 48

約数和(自身を含む): 173150208

約数和(自身を除く): 94290788

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 1951, 2021, 3902, 4042, 7804, 8084, 9755, 10105, 19510, 20210, 39020, 40420, 83893, 91697, 167786, 183394, 335572, 366788, 419465, 458485, 838930, 916970, 1677860, 1833940, 3942971, 7885942, 15771884, 19714855, 39429710, 78859420]

約数ペア:

[(1, 78859420), (2, 39429710), (4, 19714855), (5, 15771884), (10, 7885942), (20, 3942971), (43, 1833940), (47, 1677860), (86, 916970), (94, 838930), (172, 458485), (188, 419465), (215, 366788), (235, 335572), (430, 183394), (470, 167786), (860, 91697), (940, 83893), (1951, 40420), (2021, 39020), (3902, 20210), (4042, 19510), (7804, 10105), (8084, 9755)]