12345620720

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{36857}}^1$

素因数の和:37002

約数の個数: 80

約数和(自身を含む): 29616140160

約数和(自身を除く): 17270519440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 79, 80, 106, 158, 212, 265, 316, 395, 424, 530, 632, 790, 848, 1060, 1264, 1580, 2120, 3160, 4187, 4240, 6320, 8374, 16748, 20935, 33496, 36857, 41870, 66992, 73714, 83740, 147428, 167480, 184285, 294856, 334960, 368570, 589712, 737140, 1474280, 1953421, 2911703, 2948560, 3906842, 5823406, 7813684, 9767105, 11646812, 14558515, 15627368, 19534210, 23293624, 29117030, 31254736, 39068420, 46587248, 58234060, 78136840, 116468120, 154320259, 156273680, 232936240, 308640518, 617281036, 771601295, 1234562072, 1543202590, 2469124144, 3086405180, 6172810360, 12345620720]

約数ペア:

[(1, 12345620720), (2, 6172810360), (4, 3086405180), (5, 2469124144), (8, 1543202590), (10, 1234562072), (16, 771601295), (20, 617281036), (40, 308640518), (53, 232936240), (79, 156273680), (80, 154320259), (106, 116468120), (158, 78136840), (212, 58234060), (265, 46587248), (316, 39068420), (395, 31254736), (424, 29117030), (530, 23293624), (632, 19534210), (790, 15627368), (848, 14558515), (1060, 11646812), (1264, 9767105), (1580, 7813684), (2120, 5823406), (3160, 3906842), (4187, 2948560), (4240, 2911703), (6320, 1953421), (8374, 1474280), (16748, 737140), (20935, 589712), (33496, 368570), (36857, 334960), (41870, 294856), (66992, 184285), (73714, 167480), (83740, 147428)]