81110900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1451}}^1$

素因数の和:1521

約数の個数: 72

約数和(自身を含む): 194091744

約数和(自身を除く): 112980844

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 130, 172, 215, 260, 325, 430, 559, 650, 860, 1075, 1118, 1300, 1451, 2150, 2236, 2795, 2902, 4300, 5590, 5804, 7255, 11180, 13975, 14510, 18863, 27950, 29020, 36275, 37726, 55900, 62393, 72550, 75452, 94315, 124786, 145100, 188630, 249572, 311965, 377260, 471575, 623930, 811109, 943150, 1247860, 1559825, 1622218, 1886300, 3119650, 3244436, 4055545, 6239300, 8111090, 16222180, 20277725, 40555450, 81110900]

約数ペア:

[(1, 81110900), (2, 40555450), (4, 20277725), (5, 16222180), (10, 8111090), (13, 6239300), (20, 4055545), (25, 3244436), (26, 3119650), (43, 1886300), (50, 1622218), (52, 1559825), (65, 1247860), (86, 943150), (100, 811109), (130, 623930), (172, 471575), (215, 377260), (260, 311965), (325, 249572), (430, 188630), (559, 145100), (650, 124786), (860, 94315), (1075, 75452), (1118, 72550), (1300, 62393), (1451, 55900), (2150, 37726), (2236, 36275), (2795, 29020), (2902, 27950), (4300, 18863), (5590, 14510), (5804, 13975), (7255, 11180)]