64654720

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:460

約数の個数: 128

約数和(自身を含む): 175644000

約数和(自身を除く): 110989280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 409, 416, 494, 520, 608, 640, 760, 818, 832, 988, 1040, 1216, 1235, 1520, 1636, 1664, 1976, 2045, 2080, 2432, 2470, 3040, 3272, 3952, 4090, 4160, 4940, 5317, 6080, 6544, 7771, 7904, 8180, 8320, 9880, 10634, 12160, 13088, 15542, 15808, 16360, 19760, 21268, 26176, 26585, 31084, 31616, 32720, 38855, 39520, 42536, 52352, 53170, 62168, 65440, 77710, 79040, 85072, 101023, 106340, 124336, 130880, 155420, 158080, 170144, 202046, 212680, 248672, 261760, 310840, 340288, 404092, 425360, 497344, 505115, 621680, 680576, 808184, 850720, 994688, 1010230, 1243360, 1616368, 1701440, 2020460, 2486720, 3232736, 3402880, 4040920, 4973440, 6465472, 8081840, 12930944, 16163680, 32327360, 64654720]

約数ペア:

[(1, 64654720), (2, 32327360), (4, 16163680), (5, 12930944), (8, 8081840), (10, 6465472), (13, 4973440), (16, 4040920), (19, 3402880), (20, 3232736), (26, 2486720), (32, 2020460), (38, 1701440), (40, 1616368), (52, 1243360), (64, 1010230), (65, 994688), (76, 850720), (80, 808184), (95, 680576), (104, 621680), (128, 505115), (130, 497344), (152, 425360), (160, 404092), (190, 340288), (208, 310840), (247, 261760), (260, 248672), (304, 212680), (320, 202046), (380, 170144), (409, 158080), (416, 155420), (494, 130880), (520, 124336), (608, 106340), (640, 101023), (760, 85072), (818, 79040), (832, 77710), (988, 65440), (1040, 62168), (1216, 53170), (1235, 52352), (1520, 42536), (1636, 39520), (1664, 38855), (1976, 32720), (2045, 31616), (2080, 31084), (2432, 26585), (2470, 26176), (3040, 21268), (3272, 19760), (3952, 16360), (4090, 15808), (4160, 15542), (4940, 13088), (5317, 12160), (6080, 10634), (6544, 9880), (7771, 8320), (7904, 8180)]