988891280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{20231}}^1$

素因数の和:20304

約数の個数: 80

約数和(自身を含む): 2528838144

約数和(自身を除く): 1539946864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 47, 52, 65, 80, 94, 104, 130, 188, 208, 235, 260, 376, 470, 520, 611, 752, 940, 1040, 1222, 1880, 2444, 3055, 3760, 4888, 6110, 9776, 12220, 20231, 24440, 40462, 48880, 80924, 101155, 161848, 202310, 263003, 323696, 404620, 526006, 809240, 950857, 1052012, 1315015, 1618480, 1901714, 2104024, 2630030, 3803428, 4208048, 4754285, 5260060, 7606856, 9508570, 10520120, 12361141, 15213712, 19017140, 21040240, 24722282, 38034280, 49444564, 61805705, 76068560, 98889128, 123611410, 197778256, 247222820, 494445640, 988891280]

約数ペア:

[(1, 988891280), (2, 494445640), (4, 247222820), (5, 197778256), (8, 123611410), (10, 98889128), (13, 76068560), (16, 61805705), (20, 49444564), (26, 38034280), (40, 24722282), (47, 21040240), (52, 19017140), (65, 15213712), (80, 12361141), (94, 10520120), (104, 9508570), (130, 7606856), (188, 5260060), (208, 4754285), (235, 4208048), (260, 3803428), (376, 2630030), (470, 2104024), (520, 1901714), (611, 1618480), (752, 1315015), (940, 1052012), (1040, 950857), (1222, 809240), (1880, 526006), (2444, 404620), (3055, 323696), (3760, 263003), (4888, 202310), (6110, 161848), (9776, 101155), (12220, 80924), (20231, 48880), (24440, 40462)]