78752720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:492

約数の個数: 80

約数和(自身を含む): 194451840

約数和(自身を除く): 115699120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 197, 263, 304, 380, 394, 526, 760, 788, 985, 1052, 1315, 1520, 1576, 1970, 2104, 2630, 3152, 3743, 3940, 4208, 4997, 5260, 7486, 7880, 9994, 10520, 14972, 15760, 18715, 19988, 21040, 24985, 29944, 37430, 39976, 49970, 51811, 59888, 74860, 79952, 99940, 103622, 149720, 199880, 207244, 259055, 299440, 399760, 414488, 518110, 828976, 984409, 1036220, 1968818, 2072440, 3937636, 4144880, 4922045, 7875272, 9844090, 15750544, 19688180, 39376360, 78752720]

約数ペア:

[(1, 78752720), (2, 39376360), (4, 19688180), (5, 15750544), (8, 9844090), (10, 7875272), (16, 4922045), (19, 4144880), (20, 3937636), (38, 2072440), (40, 1968818), (76, 1036220), (80, 984409), (95, 828976), (152, 518110), (190, 414488), (197, 399760), (263, 299440), (304, 259055), (380, 207244), (394, 199880), (526, 149720), (760, 103622), (788, 99940), (985, 79952), (1052, 74860), (1315, 59888), (1520, 51811), (1576, 49970), (1970, 39976), (2104, 37430), (2630, 29944), (3152, 24985), (3743, 21040), (3940, 19988), (4208, 18715), (4997, 15760), (5260, 14972), (7486, 10520), (7880, 9994)]