128304880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{691}}^1$

素因数の和:926

約数の個数: 80

約数和(自身を含む): 327443328

約数和(自身を除く): 199138448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 211, 220, 422, 440, 691, 844, 880, 1055, 1382, 1688, 2110, 2321, 2764, 3376, 3455, 4220, 4642, 5528, 6910, 7601, 8440, 9284, 11056, 11605, 13820, 15202, 16880, 18568, 23210, 27640, 30404, 37136, 38005, 46420, 55280, 60808, 76010, 92840, 121616, 145801, 152020, 185680, 291602, 304040, 583204, 608080, 729005, 1166408, 1458010, 1603811, 2332816, 2916020, 3207622, 5832040, 6415244, 8019055, 11664080, 12830488, 16038110, 25660976, 32076220, 64152440, 128304880]

約数ペア:

[(1, 128304880), (2, 64152440), (4, 32076220), (5, 25660976), (8, 16038110), (10, 12830488), (11, 11664080), (16, 8019055), (20, 6415244), (22, 5832040), (40, 3207622), (44, 2916020), (55, 2332816), (80, 1603811), (88, 1458010), (110, 1166408), (176, 729005), (211, 608080), (220, 583204), (422, 304040), (440, 291602), (691, 185680), (844, 152020), (880, 145801), (1055, 121616), (1382, 92840), (1688, 76010), (2110, 60808), (2321, 55280), (2764, 46420), (3376, 38005), (3455, 37136), (4220, 30404), (4642, 27640), (5528, 23210), (6910, 18568), (7601, 16880), (8440, 15202), (9284, 13820), (11056, 11605)]