20797280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{599}}^1$

素因数の和:652

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 37263520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 434, 496, 560, 599, 620, 868, 992, 1085, 1120, 1198, 1240, 1736, 2170, 2396, 2480, 2995, 3472, 4193, 4340, 4792, 4960, 5990, 6944, 8386, 8680, 9584, 11980, 16772, 17360, 18569, 19168, 20965, 23960, 33544, 34720, 37138, 41930, 47920, 67088, 74276, 83860, 92845, 95840, 129983, 134176, 148552, 167720, 185690, 259966, 297104, 335440, 371380, 519932, 594208, 649915, 670880, 742760, 1039864, 1299830, 1485520, 2079728, 2599660, 2971040, 4159456, 5199320, 10398640, 20797280]

約数ペア:

[(1, 20797280), (2, 10398640), (4, 5199320), (5, 4159456), (7, 2971040), (8, 2599660), (10, 2079728), (14, 1485520), (16, 1299830), (20, 1039864), (28, 742760), (31, 670880), (32, 649915), (35, 594208), (40, 519932), (56, 371380), (62, 335440), (70, 297104), (80, 259966), (112, 185690), (124, 167720), (140, 148552), (155, 134176), (160, 129983), (217, 95840), (224, 92845), (248, 83860), (280, 74276), (310, 67088), (434, 47920), (496, 41930), (560, 37138), (599, 34720), (620, 33544), (868, 23960), (992, 20965), (1085, 19168), (1120, 18569), (1198, 17360), (1240, 16772), (1736, 11980), (2170, 9584), (2396, 8680), (2480, 8386), (2995, 6944), (3472, 5990), (4193, 4960), (4340, 4792)]