2019999680

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1297}}^1$

素因数の和:1502

約数の個数: 112

約数和(自身を含む): 5000768256

約数和(自身を除く): 2980768576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 157, 160, 248, 310, 314, 320, 496, 620, 628, 785, 992, 1240, 1256, 1297, 1570, 1984, 2480, 2512, 2594, 3140, 4867, 4960, 5024, 5188, 6280, 6485, 9734, 9920, 10048, 10376, 12560, 12970, 19468, 20752, 24335, 25120, 25940, 38936, 40207, 41504, 48670, 50240, 51880, 77872, 80414, 83008, 97340, 103760, 155744, 160828, 194680, 201035, 203629, 207520, 311488, 321656, 389360, 402070, 407258, 415040, 643312, 778720, 804140, 814516, 1018145, 1286624, 1557440, 1608280, 1629032, 2036290, 2573248, 3216560, 3258064, 4072580, 6312499, 6433120, 6516128, 8145160, 12624998, 12866240, 13032256, 16290320, 25249996, 31562495, 32580640, 50499992, 63124990, 65161280, 100999984, 126249980, 201999968, 252499960, 403999936, 504999920, 1009999840, 2019999680]

約数ペア:

[(1, 2019999680), (2, 1009999840), (4, 504999920), (5, 403999936), (8, 252499960), (10, 201999968), (16, 126249980), (20, 100999984), (31, 65161280), (32, 63124990), (40, 50499992), (62, 32580640), (64, 31562495), (80, 25249996), (124, 16290320), (155, 13032256), (157, 12866240), (160, 12624998), (248, 8145160), (310, 6516128), (314, 6433120), (320, 6312499), (496, 4072580), (620, 3258064), (628, 3216560), (785, 2573248), (992, 2036290), (1240, 1629032), (1256, 1608280), (1297, 1557440), (1570, 1286624), (1984, 1018145), (2480, 814516), (2512, 804140), (2594, 778720), (3140, 643312), (4867, 415040), (4960, 407258), (5024, 402070), (5188, 389360), (6280, 321656), (6485, 311488), (9734, 207520), (9920, 203629), (10048, 201035), (10376, 194680), (12560, 160828), (12970, 155744), (19468, 103760), (20752, 97340), (24335, 83008), (25120, 80414), (25940, 77872), (38936, 51880), (40207, 50240), (41504, 48670)]