345679840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{997}}^1$

素因数の和:1220

約数の個数: 96

約数和(自身を含む): 896331744

約数和(自身を除く): 550651904

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 197, 220, 352, 394, 440, 788, 880, 985, 997, 1576, 1760, 1970, 1994, 2167, 3152, 3940, 3988, 4334, 4985, 6304, 7880, 7976, 8668, 9970, 10835, 10967, 15760, 15952, 17336, 19940, 21670, 21934, 31520, 31904, 34672, 39880, 43340, 43868, 54835, 69344, 79760, 86680, 87736, 109670, 159520, 173360, 175472, 196409, 219340, 346720, 350944, 392818, 438680, 785636, 877360, 982045, 1571272, 1754720, 1964090, 2160499, 3142544, 3928180, 4320998, 6285088, 7856360, 8641996, 10802495, 15712720, 17283992, 21604990, 31425440, 34567984, 43209980, 69135968, 86419960, 172839920, 345679840]

約数ペア:

[(1, 345679840), (2, 172839920), (4, 86419960), (5, 69135968), (8, 43209980), (10, 34567984), (11, 31425440), (16, 21604990), (20, 17283992), (22, 15712720), (32, 10802495), (40, 8641996), (44, 7856360), (55, 6285088), (80, 4320998), (88, 3928180), (110, 3142544), (160, 2160499), (176, 1964090), (197, 1754720), (220, 1571272), (352, 982045), (394, 877360), (440, 785636), (788, 438680), (880, 392818), (985, 350944), (997, 346720), (1576, 219340), (1760, 196409), (1970, 175472), (1994, 173360), (2167, 159520), (3152, 109670), (3940, 87736), (3988, 86680), (4334, 79760), (4985, 69344), (6304, 54835), (7880, 43868), (7976, 43340), (8668, 39880), (9970, 34672), (10835, 31904), (10967, 31520), (15760, 21934), (15952, 21670), (17336, 19940)]