1279404680

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1\times {\mathrm{709}}^1$

素因数の和:1146

約数の個数: 64

約数和(自身を含む): 2910006000

約数和(自身を除く): 1630601320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 229, 394, 458, 709, 788, 916, 985, 1145, 1418, 1576, 1832, 1970, 2290, 2836, 3545, 3940, 4580, 5672, 7090, 7880, 9160, 14180, 28360, 45113, 90226, 139673, 162361, 180452, 225565, 279346, 324722, 360904, 451130, 558692, 649444, 698365, 811805, 902260, 1117384, 1298888, 1396730, 1623610, 1804520, 2793460, 3247220, 5586920, 6494440, 31985117, 63970234, 127940468, 159925585, 255880936, 319851170, 639702340, 1279404680]

約数ペア:

[(1, 1279404680), (2, 639702340), (4, 319851170), (5, 255880936), (8, 159925585), (10, 127940468), (20, 63970234), (40, 31985117), (197, 6494440), (229, 5586920), (394, 3247220), (458, 2793460), (709, 1804520), (788, 1623610), (916, 1396730), (985, 1298888), (1145, 1117384), (1418, 902260), (1576, 811805), (1832, 698365), (1970, 649444), (2290, 558692), (2836, 451130), (3545, 360904), (3940, 324722), (4580, 279346), (5672, 225565), (7090, 180452), (7880, 162361), (9160, 139673), (14180, 90226), (28360, 45113)]