398517720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:497

約数の個数: 128

約数和(自身を含む): 1221454080

約数和(自身を除く): 822936360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 101, 120, 131, 202, 251, 262, 303, 393, 404, 502, 505, 524, 606, 655, 753, 786, 808, 1004, 1010, 1048, 1212, 1255, 1310, 1506, 1515, 1572, 1965, 2008, 2020, 2424, 2510, 2620, 3012, 3030, 3144, 3765, 3930, 4040, 5020, 5240, 6024, 6060, 7530, 7860, 10040, 12120, 13231, 15060, 15720, 25351, 26462, 30120, 32881, 39693, 50702, 52924, 65762, 66155, 76053, 79386, 98643, 101404, 105848, 126755, 131524, 132310, 152106, 158772, 164405, 197286, 198465, 202808, 253510, 263048, 264620, 304212, 317544, 328810, 380265, 394572, 396930, 493215, 507020, 529240, 608424, 657620, 760530, 789144, 793860, 986430, 1014040, 1315240, 1521060, 1587720, 1972860, 3042120, 3320981, 3945720, 6641962, 9962943, 13283924, 16604905, 19925886, 26567848, 33209810, 39851772, 49814715, 66419620, 79703544, 99629430, 132839240, 199258860, 398517720]

約数ペア:

[(1, 398517720), (2, 199258860), (3, 132839240), (4, 99629430), (5, 79703544), (6, 66419620), (8, 49814715), (10, 39851772), (12, 33209810), (15, 26567848), (20, 19925886), (24, 16604905), (30, 13283924), (40, 9962943), (60, 6641962), (101, 3945720), (120, 3320981), (131, 3042120), (202, 1972860), (251, 1587720), (262, 1521060), (303, 1315240), (393, 1014040), (404, 986430), (502, 793860), (505, 789144), (524, 760530), (606, 657620), (655, 608424), (753, 529240), (786, 507020), (808, 493215), (1004, 396930), (1010, 394572), (1048, 380265), (1212, 328810), (1255, 317544), (1310, 304212), (1506, 264620), (1515, 263048), (1572, 253510), (1965, 202808), (2008, 198465), (2020, 197286), (2424, 164405), (2510, 158772), (2620, 152106), (3012, 132310), (3030, 131524), (3144, 126755), (3765, 105848), (3930, 101404), (4040, 98643), (5020, 79386), (5240, 76053), (6024, 66155), (6060, 65762), (7530, 52924), (7860, 50702), (10040, 39693), (12120, 32881), (13231, 30120), (15060, 26462), (15720, 25351)]