64691440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 120

約数和(自身を含む): 170395344

約数和(自身を除く): 105703904

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 55, 80, 82, 88, 110, 121, 163, 164, 176, 205, 220, 242, 326, 328, 410, 440, 451, 484, 605, 652, 656, 815, 820, 880, 902, 968, 1210, 1304, 1630, 1640, 1793, 1804, 1936, 2255, 2420, 2608, 3260, 3280, 3586, 3608, 4510, 4840, 4961, 6520, 6683, 7172, 7216, 8965, 9020, 9680, 9922, 13040, 13366, 14344, 17930, 18040, 19723, 19844, 24805, 26732, 28688, 33415, 35860, 36080, 39446, 39688, 49610, 53464, 66830, 71720, 73513, 78892, 79376, 98615, 99220, 106928, 133660, 143440, 147026, 157784, 197230, 198440, 267320, 294052, 315568, 367565, 394460, 396880, 534640, 588104, 735130, 788920, 808643, 1176208, 1470260, 1577840, 1617286, 2940520, 3234572, 4043215, 5881040, 6469144, 8086430, 12938288, 16172860, 32345720, 64691440]

約数ペア:

[(1, 64691440), (2, 32345720), (4, 16172860), (5, 12938288), (8, 8086430), (10, 6469144), (11, 5881040), (16, 4043215), (20, 3234572), (22, 2940520), (40, 1617286), (41, 1577840), (44, 1470260), (55, 1176208), (80, 808643), (82, 788920), (88, 735130), (110, 588104), (121, 534640), (163, 396880), (164, 394460), (176, 367565), (205, 315568), (220, 294052), (242, 267320), (326, 198440), (328, 197230), (410, 157784), (440, 147026), (451, 143440), (484, 133660), (605, 106928), (652, 99220), (656, 98615), (815, 79376), (820, 78892), (880, 73513), (902, 71720), (968, 66830), (1210, 53464), (1304, 49610), (1630, 39688), (1640, 39446), (1793, 36080), (1804, 35860), (1936, 33415), (2255, 28688), (2420, 26732), (2608, 24805), (3260, 19844), (3280, 19723), (3586, 18040), (3608, 17930), (4510, 14344), (4840, 13366), (4961, 13040), (6520, 9922), (6683, 9680), (7172, 9020), (7216, 8965)]