72440840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{317}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 170002800

約数和(自身を除く): 97561960

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 197, 232, 290, 317, 394, 580, 634, 788, 985, 1160, 1268, 1576, 1585, 1970, 2536, 3170, 3940, 5713, 6340, 7880, 9193, 11426, 12680, 18386, 22852, 28565, 36772, 45704, 45965, 57130, 62449, 73544, 91930, 114260, 124898, 183860, 228520, 249796, 312245, 367720, 499592, 624490, 1248980, 1811021, 2497960, 3622042, 7244084, 9055105, 14488168, 18110210, 36220420, 72440840]

約数ペア:

[(1, 72440840), (2, 36220420), (4, 18110210), (5, 14488168), (8, 9055105), (10, 7244084), (20, 3622042), (29, 2497960), (40, 1811021), (58, 1248980), (116, 624490), (145, 499592), (197, 367720), (232, 312245), (290, 249796), (317, 228520), (394, 183860), (580, 124898), (634, 114260), (788, 91930), (985, 73544), (1160, 62449), (1268, 57130), (1576, 45965), (1585, 45704), (1970, 36772), (2536, 28565), (3170, 22852), (3940, 18386), (5713, 12680), (6340, 11426), (7880, 9193)]