21603921040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{340541}}^1$

素因数の和:340628

約数の個数: 80

約数和(自身を含む): 54979824816

約数和(自身を除く): 33375903776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 520, 610, 793, 976, 1040, 1220, 1586, 2440, 3172, 3965, 4880, 6344, 7930, 12688, 15860, 31720, 63440, 340541, 681082, 1362164, 1702705, 2724328, 3405410, 4427033, 5448656, 6810820, 8854066, 13621640, 17708132, 20773001, 22135165, 27243280, 35416264, 41546002, 44270330, 70832528, 83092004, 88540660, 103865005, 166184008, 177081320, 207730010, 270049013, 332368016, 354162640, 415460020, 540098026, 830920040, 1080196052, 1350245065, 1661840080, 2160392104, 2700490130, 4320784208, 5400980260, 10801960520, 21603921040]

約数ペア:

[(1, 21603921040), (2, 10801960520), (4, 5400980260), (5, 4320784208), (8, 2700490130), (10, 2160392104), (13, 1661840080), (16, 1350245065), (20, 1080196052), (26, 830920040), (40, 540098026), (52, 415460020), (61, 354162640), (65, 332368016), (80, 270049013), (104, 207730010), (122, 177081320), (130, 166184008), (208, 103865005), (244, 88540660), (260, 83092004), (305, 70832528), (488, 44270330), (520, 41546002), (610, 35416264), (793, 27243280), (976, 22135165), (1040, 20773001), (1220, 17708132), (1586, 13621640), (2440, 8854066), (3172, 6810820), (3965, 5448656), (4880, 4427033), (6344, 3405410), (7930, 2724328), (12688, 1702705), (15860, 1362164), (31720, 681082), (63440, 340541)]