643178080

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 144

約数和(自身を含む): 1621529280

約数和(自身を除く): 978351200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 47, 62, 80, 89, 94, 124, 155, 160, 178, 188, 235, 248, 310, 356, 376, 445, 470, 496, 620, 712, 752, 890, 940, 961, 992, 1240, 1424, 1457, 1504, 1780, 1880, 1922, 2480, 2759, 2848, 2914, 3560, 3760, 3844, 4183, 4805, 4960, 5518, 5828, 7120, 7285, 7520, 7688, 8366, 9610, 11036, 11656, 13795, 14240, 14570, 15376, 16732, 19220, 20915, 22072, 23312, 27590, 29140, 30752, 33464, 38440, 41830, 44144, 45167, 46624, 55180, 58280, 66928, 76880, 83660, 85529, 88288, 90334, 110360, 116560, 129673, 133856, 153760, 167320, 171058, 180668, 220720, 225835, 233120, 259346, 334640, 342116, 361336, 427645, 441440, 451670, 518692, 648365, 669280, 684232, 722672, 855290, 903340, 1037384, 1296730, 1368464, 1445344, 1710580, 1806680, 2074768, 2593460, 2736928, 3421160, 3613360, 4019863, 4149536, 5186920, 6842320, 7226720, 8039726, 10373840, 13684640, 16079452, 20099315, 20747680, 32158904, 40198630, 64317808, 80397260, 128635616, 160794520, 321589040, 643178080]

約数ペア:

[(1, 643178080), (2, 321589040), (4, 160794520), (5, 128635616), (8, 80397260), (10, 64317808), (16, 40198630), (20, 32158904), (31, 20747680), (32, 20099315), (40, 16079452), (47, 13684640), (62, 10373840), (80, 8039726), (89, 7226720), (94, 6842320), (124, 5186920), (155, 4149536), (160, 4019863), (178, 3613360), (188, 3421160), (235, 2736928), (248, 2593460), (310, 2074768), (356, 1806680), (376, 1710580), (445, 1445344), (470, 1368464), (496, 1296730), (620, 1037384), (712, 903340), (752, 855290), (890, 722672), (940, 684232), (961, 669280), (992, 648365), (1240, 518692), (1424, 451670), (1457, 441440), (1504, 427645), (1780, 361336), (1880, 342116), (1922, 334640), (2480, 259346), (2759, 233120), (2848, 225835), (2914, 220720), (3560, 180668), (3760, 171058), (3844, 167320), (4183, 153760), (4805, 133856), (4960, 129673), (5518, 116560), (5828, 110360), (7120, 90334), (7285, 88288), (7520, 85529), (7688, 83660), (8366, 76880), (9610, 66928), (11036, 58280), (11656, 55180), (13795, 46624), (14240, 45167), (14570, 44144), (15376, 41830), (16732, 38440), (19220, 33464), (20915, 30752), (22072, 29140), (23312, 27590)]