65782720

素因数分解:

$2^6\times 5^1\times {\mathrm{311}}^1\times {\mathrm{661}}^1$

素因数の和:989

約数の個数: 56

約数和(自身を含む): 157386528

約数和(自身を除く): 91603808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 311, 320, 622, 661, 1244, 1322, 1555, 2488, 2644, 3110, 3305, 4976, 5288, 6220, 6610, 9952, 10576, 12440, 13220, 19904, 21152, 24880, 26440, 42304, 49760, 52880, 99520, 105760, 205571, 211520, 411142, 822284, 1027855, 1644568, 2055710, 3289136, 4111420, 6578272, 8222840, 13156544, 16445680, 32891360, 65782720]

約数ペア:

[(1, 65782720), (2, 32891360), (4, 16445680), (5, 13156544), (8, 8222840), (10, 6578272), (16, 4111420), (20, 3289136), (32, 2055710), (40, 1644568), (64, 1027855), (80, 822284), (160, 411142), (311, 211520), (320, 205571), (622, 105760), (661, 99520), (1244, 52880), (1322, 49760), (1555, 42304), (2488, 26440), (2644, 24880), (3110, 21152), (3305, 19904), (4976, 13220), (5288, 12440), (6220, 10576), (6610, 9952)]