678357860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{97}}^1\times {\mathrm{661}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 1506809976

約数和(自身を除く): 828452116

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 97, 115, 194, 230, 388, 460, 485, 529, 661, 970, 1058, 1322, 1940, 2116, 2231, 2644, 2645, 3305, 4462, 5290, 6610, 8924, 10580, 11155, 13220, 15203, 22310, 30406, 44620, 51313, 60812, 64117, 76015, 102626, 128234, 152030, 205252, 256468, 256565, 304060, 320585, 349669, 513130, 641170, 699338, 1026260, 1282340, 1398676, 1474691, 1748345, 2949382, 3496690, 5898764, 6993380, 7373455, 14746910, 29493820, 33917893, 67835786, 135671572, 169589465, 339178930, 678357860]

約数ペア:

[(1, 678357860), (2, 339178930), (4, 169589465), (5, 135671572), (10, 67835786), (20, 33917893), (23, 29493820), (46, 14746910), (92, 7373455), (97, 6993380), (115, 5898764), (194, 3496690), (230, 2949382), (388, 1748345), (460, 1474691), (485, 1398676), (529, 1282340), (661, 1026260), (970, 699338), (1058, 641170), (1322, 513130), (1940, 349669), (2116, 320585), (2231, 304060), (2644, 256565), (2645, 256468), (3305, 205252), (4462, 152030), (5290, 128234), (6610, 102626), (8924, 76015), (10580, 64117), (11155, 60812), (13220, 51313), (15203, 44620), (22310, 30406)]