81754640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1523}}^1$

素因数の和:1608

約数の個数: 80

約数和(自身を含む): 210897216

約数和(自身を除く): 129142576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 61, 80, 88, 110, 122, 176, 220, 244, 305, 440, 488, 610, 671, 880, 976, 1220, 1342, 1523, 2440, 2684, 3046, 3355, 4880, 5368, 6092, 6710, 7615, 10736, 12184, 13420, 15230, 16753, 24368, 26840, 30460, 33506, 53680, 60920, 67012, 83765, 92903, 121840, 134024, 167530, 185806, 268048, 335060, 371612, 464515, 670120, 743224, 929030, 1021933, 1340240, 1486448, 1858060, 2043866, 3716120, 4087732, 5109665, 7432240, 8175464, 10219330, 16350928, 20438660, 40877320, 81754640]

約数ペア:

[(1, 81754640), (2, 40877320), (4, 20438660), (5, 16350928), (8, 10219330), (10, 8175464), (11, 7432240), (16, 5109665), (20, 4087732), (22, 3716120), (40, 2043866), (44, 1858060), (55, 1486448), (61, 1340240), (80, 1021933), (88, 929030), (110, 743224), (122, 670120), (176, 464515), (220, 371612), (244, 335060), (305, 268048), (440, 185806), (488, 167530), (610, 134024), (671, 121840), (880, 92903), (976, 83765), (1220, 67012), (1342, 60920), (1523, 53680), (2440, 33506), (2684, 30460), (3046, 26840), (3355, 24368), (4880, 16753), (5368, 15230), (6092, 13420), (6710, 12184), (7615, 10736)]