81178680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:805

約数の個数: 128

約数和(自身を含む): 269049600

約数和(自身を除く): 187870920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 89, 110, 120, 132, 165, 178, 220, 264, 267, 330, 356, 440, 445, 534, 660, 691, 712, 890, 979, 1068, 1320, 1335, 1382, 1780, 1958, 2073, 2136, 2670, 2764, 2937, 3455, 3560, 3916, 4146, 4895, 5340, 5528, 5874, 6910, 7601, 7832, 8292, 9790, 10365, 10680, 11748, 13820, 14685, 15202, 16584, 19580, 20730, 22803, 23496, 27640, 29370, 30404, 38005, 39160, 41460, 45606, 58740, 60808, 61499, 76010, 82920, 91212, 114015, 117480, 122998, 152020, 182424, 184497, 228030, 245996, 304040, 307495, 368994, 456060, 491992, 614990, 676489, 737988, 912120, 922485, 1229980, 1352978, 1475976, 1844970, 2029467, 2459960, 2705956, 3382445, 3689940, 4058934, 5411912, 6764890, 7379880, 8117868, 10147335, 13529780, 16235736, 20294670, 27059560, 40589340, 81178680]

約数ペア:

[(1, 81178680), (2, 40589340), (3, 27059560), (4, 20294670), (5, 16235736), (6, 13529780), (8, 10147335), (10, 8117868), (11, 7379880), (12, 6764890), (15, 5411912), (20, 4058934), (22, 3689940), (24, 3382445), (30, 2705956), (33, 2459960), (40, 2029467), (44, 1844970), (55, 1475976), (60, 1352978), (66, 1229980), (88, 922485), (89, 912120), (110, 737988), (120, 676489), (132, 614990), (165, 491992), (178, 456060), (220, 368994), (264, 307495), (267, 304040), (330, 245996), (356, 228030), (440, 184497), (445, 182424), (534, 152020), (660, 122998), (691, 117480), (712, 114015), (890, 91212), (979, 82920), (1068, 76010), (1320, 61499), (1335, 60808), (1382, 58740), (1780, 45606), (1958, 41460), (2073, 39160), (2136, 38005), (2670, 30404), (2764, 29370), (2937, 27640), (3455, 23496), (3560, 22803), (3916, 20730), (4146, 19580), (4895, 16584), (5340, 15202), (5528, 14685), (5874, 13820), (6910, 11748), (7601, 10680), (7832, 10365), (8292, 9790)]