221871980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:435

約数の個数: 96

約数和(自身を含む): 529284672

約数和(自身を除く): 307412692

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 97, 110, 148, 185, 194, 220, 281, 370, 388, 407, 485, 562, 740, 814, 970, 1067, 1124, 1405, 1628, 1940, 2035, 2134, 2810, 3091, 3589, 4070, 4268, 5335, 5620, 6182, 7178, 8140, 10397, 10670, 12364, 14356, 15455, 17945, 20794, 21340, 27257, 30910, 35890, 39479, 41588, 51985, 54514, 61820, 71780, 78958, 103970, 109028, 114367, 136285, 157916, 197395, 207940, 228734, 272570, 299827, 394790, 457468, 545140, 571835, 599654, 789580, 1008509, 1143670, 1199308, 1499135, 2017018, 2287340, 2998270, 4034036, 5042545, 5996540, 10085090, 11093599, 20170180, 22187198, 44374396, 55467995, 110935990, 221871980]

約数ペア:

[(1, 221871980), (2, 110935990), (4, 55467995), (5, 44374396), (10, 22187198), (11, 20170180), (20, 11093599), (22, 10085090), (37, 5996540), (44, 5042545), (55, 4034036), (74, 2998270), (97, 2287340), (110, 2017018), (148, 1499135), (185, 1199308), (194, 1143670), (220, 1008509), (281, 789580), (370, 599654), (388, 571835), (407, 545140), (485, 457468), (562, 394790), (740, 299827), (814, 272570), (970, 228734), (1067, 207940), (1124, 197395), (1405, 157916), (1628, 136285), (1940, 114367), (2035, 109028), (2134, 103970), (2810, 78958), (3091, 71780), (3589, 61820), (4070, 54514), (4268, 51985), (5335, 41588), (5620, 39479), (6182, 35890), (7178, 30910), (8140, 27257), (10397, 21340), (10670, 20794), (12364, 17945), (14356, 15455)]