645595395

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:860

約数の個数: 64

約数和(自身を含む): 1143936000

約数和(自身を除く): 498340605

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 95, 115, 149, 285, 345, 437, 447, 661, 745, 1311, 1983, 2185, 2235, 2831, 3305, 3427, 6555, 8493, 9915, 10281, 12559, 14155, 15203, 17135, 37677, 42465, 45609, 51405, 62795, 65113, 76015, 98489, 188385, 195339, 228045, 288857, 295467, 325565, 492445, 866571, 976695, 1444285, 1477335, 1871291, 2265247, 4332855, 5613873, 6795741, 9356455, 11326235, 28069365, 33978705, 43039693, 129119079, 215198465, 645595395]

約数ペア:

[(1, 645595395), (3, 215198465), (5, 129119079), (15, 43039693), (19, 33978705), (23, 28069365), (57, 11326235), (69, 9356455), (95, 6795741), (115, 5613873), (149, 4332855), (285, 2265247), (345, 1871291), (437, 1477335), (447, 1444285), (661, 976695), (745, 866571), (1311, 492445), (1983, 325565), (2185, 295467), (2235, 288857), (2831, 228045), (3305, 195339), (3427, 188385), (6555, 98489), (8493, 76015), (9915, 65113), (10281, 62795), (12559, 51405), (14155, 45609), (15203, 42465), (17135, 37677)]