20747680

素因数分解:

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

素因数の和:182

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 31507040

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, 992, 1240, 1424, 1457, 1504, 1780, 1880, 2480, 2759, 2848, 2914, 3560, 3760, 4183, 4960, 5518, 5828, 7120, 7285, 7520, 8366, 11036, 11656, 13795, 14240, 14570, 16732, 20915, 22072, 23312, 27590, 29140, 33464, 41830, 44144, 46624, 55180, 58280, 66928, 83660, 88288, 110360, 116560, 129673, 133856, 167320, 220720, 233120, 259346, 334640, 441440, 518692, 648365, 669280, 1037384, 1296730, 2074768, 2593460, 4149536, 5186920, 10373840, 20747680]

約数ペア:

[(1, 20747680), (2, 10373840), (4, 5186920), (5, 4149536), (8, 2593460), (10, 2074768), (16, 1296730), (20, 1037384), (31, 669280), (32, 648365), (40, 518692), (47, 441440), (62, 334640), (80, 259346), (89, 233120), (94, 220720), (124, 167320), (155, 133856), (160, 129673), (178, 116560), (188, 110360), (235, 88288), (248, 83660), (310, 66928), (356, 58280), (376, 55180), (445, 46624), (470, 44144), (496, 41830), (620, 33464), (712, 29140), (752, 27590), (890, 23312), (940, 22072), (992, 20915), (1240, 16732), (1424, 14570), (1457, 14240), (1504, 13795), (1780, 11656), (1880, 11036), (2480, 8366), (2759, 7520), (2848, 7285), (2914, 7120), (3560, 5828), (3760, 5518), (4183, 4960)]