638179976

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1\times {\mathrm{431}}^1$

素因数の和:774

約数の個数: 64

約数和(自身を含む): 1387860480

約数和(自身を除く): 749680504

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 193, 274, 386, 431, 548, 772, 862, 959, 1096, 1351, 1544, 1724, 1918, 2702, 3017, 3448, 3836, 5404, 6034, 7672, 10808, 12068, 24136, 26441, 52882, 59047, 83183, 105764, 118094, 166366, 185087, 211528, 236188, 332732, 370174, 413329, 472376, 582281, 665464, 740348, 826658, 1164562, 1480696, 1653316, 2329124, 3306632, 4658248, 11396071, 22792142, 45584284, 79772497, 91168568, 159544994, 319089988, 638179976]

約数ペア:

[(1, 638179976), (2, 319089988), (4, 159544994), (7, 91168568), (8, 79772497), (14, 45584284), (28, 22792142), (56, 11396071), (137, 4658248), (193, 3306632), (274, 2329124), (386, 1653316), (431, 1480696), (548, 1164562), (772, 826658), (862, 740348), (959, 665464), (1096, 582281), (1351, 472376), (1544, 413329), (1724, 370174), (1918, 332732), (2702, 236188), (3017, 211528), (3448, 185087), (3836, 166366), (5404, 118094), (6034, 105764), (7672, 83183), (10808, 59047), (12068, 52882), (24136, 26441)]