81700840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2663}}^1$

素因数の和:2746

約数の個数: 64

約数和(自身を含む): 201398400

約数和(自身を除く): 119697560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 59, 65, 104, 118, 130, 236, 260, 295, 472, 520, 590, 767, 1180, 1534, 2360, 2663, 3068, 3835, 5326, 6136, 7670, 10652, 13315, 15340, 21304, 26630, 30680, 34619, 53260, 69238, 106520, 138476, 157117, 173095, 276952, 314234, 346190, 628468, 692380, 785585, 1256936, 1384760, 1571170, 2042521, 3142340, 4085042, 6284680, 8170084, 10212605, 16340168, 20425210, 40850420, 81700840]

約数ペア:

[(1, 81700840), (2, 40850420), (4, 20425210), (5, 16340168), (8, 10212605), (10, 8170084), (13, 6284680), (20, 4085042), (26, 3142340), (40, 2042521), (52, 1571170), (59, 1384760), (65, 1256936), (104, 785585), (118, 692380), (130, 628468), (236, 346190), (260, 314234), (295, 276952), (472, 173095), (520, 157117), (590, 138476), (767, 106520), (1180, 69238), (1534, 53260), (2360, 34619), (2663, 30680), (3068, 26630), (3835, 21304), (5326, 15340), (6136, 13315), (7670, 10652)]