639382432

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{191}}^1\times {\mathrm{619}}^1$

素因数の和:846

約数の個数: 72

約数和(自身を含む): 1372412160

約数和(自身を除く): 733029728

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 191, 208, 338, 382, 416, 619, 676, 764, 1238, 1352, 1528, 2476, 2483, 2704, 3056, 4952, 4966, 5408, 6112, 8047, 9904, 9932, 16094, 19808, 19864, 32188, 32279, 39728, 64376, 64558, 79456, 104611, 118229, 128752, 129116, 209222, 236458, 257504, 258232, 418444, 472916, 516464, 836888, 945832, 1032928, 1536977, 1673776, 1891664, 3073954, 3347552, 3783328, 6147908, 12295816, 19980701, 24591632, 39961402, 49183264, 79922804, 159845608, 319691216, 639382432]

約数ペア:

[(1, 639382432), (2, 319691216), (4, 159845608), (8, 79922804), (13, 49183264), (16, 39961402), (26, 24591632), (32, 19980701), (52, 12295816), (104, 6147908), (169, 3783328), (191, 3347552), (208, 3073954), (338, 1891664), (382, 1673776), (416, 1536977), (619, 1032928), (676, 945832), (764, 836888), (1238, 516464), (1352, 472916), (1528, 418444), (2476, 258232), (2483, 257504), (2704, 236458), (3056, 209222), (4952, 129116), (4966, 128752), (5408, 118229), (6112, 104611), (8047, 79456), (9904, 64558), (9932, 64376), (16094, 39728), (19808, 32279), (19864, 32188)]