18520720

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6257}}^1$

素因数の和:6307

約数の個数: 40

約数和(自身を含む): 44231544

約数和(自身を除く): 25710824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6257, 12514, 25028, 31285, 50056, 62570, 100112, 125140, 231509, 250280, 463018, 500560, 926036, 1157545, 1852072, 2315090, 3704144, 4630180, 9260360, 18520720]

約数ペア:

[(1, 18520720), (2, 9260360), (4, 4630180), (5, 3704144), (8, 2315090), (10, 1852072), (16, 1157545), (20, 926036), (37, 500560), (40, 463018), (74, 250280), (80, 231509), (148, 125140), (185, 100112), (296, 62570), (370, 50056), (592, 31285), (740, 25028), (1480, 12514), (2960, 6257)]