28895960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 69141600

約数和(自身を除く): 40245640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 193, 197, 380, 386, 394, 760, 772, 788, 965, 985, 1544, 1576, 1930, 1970, 3667, 3743, 3860, 3940, 7334, 7486, 7720, 7880, 14668, 14972, 18335, 18715, 29336, 29944, 36670, 37430, 38021, 73340, 74860, 76042, 146680, 149720, 152084, 190105, 304168, 380210, 722399, 760420, 1444798, 1520840, 2889596, 3611995, 5779192, 7223990, 14447980, 28895960]

約数ペア:

[(1, 28895960), (2, 14447980), (4, 7223990), (5, 5779192), (8, 3611995), (10, 2889596), (19, 1520840), (20, 1444798), (38, 760420), (40, 722399), (76, 380210), (95, 304168), (152, 190105), (190, 152084), (193, 149720), (197, 146680), (380, 76042), (386, 74860), (394, 73340), (760, 38021), (772, 37430), (788, 36670), (965, 29944), (985, 29336), (1544, 18715), (1576, 18335), (1930, 14972), (1970, 14668), (3667, 7880), (3743, 7720), (3860, 7486), (3940, 7334)]