81031720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{26309}}^1$

素因数の和:26338

約数の個数: 64

約数和(自身を含む): 227318400

約数和(自身を除く): 146286680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 26309, 52618, 105236, 131545, 184163, 210472, 263090, 289399, 368326, 526180, 578798, 736652, 920815, 1052360, 1157596, 1446995, 1473304, 1841630, 2025793, 2315192, 2893990, 3683260, 4051586, 5787980, 7366520, 8103172, 10128965, 11575960, 16206344, 20257930, 40515860, 81031720]

約数ペア:

[(1, 81031720), (2, 40515860), (4, 20257930), (5, 16206344), (7, 11575960), (8, 10128965), (10, 8103172), (11, 7366520), (14, 5787980), (20, 4051586), (22, 3683260), (28, 2893990), (35, 2315192), (40, 2025793), (44, 1841630), (55, 1473304), (56, 1446995), (70, 1157596), (77, 1052360), (88, 920815), (110, 736652), (140, 578798), (154, 526180), (220, 368326), (280, 289399), (308, 263090), (385, 210472), (440, 184163), (616, 131545), (770, 105236), (1540, 52618), (3080, 26309)]