19770540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 57953280

約数和(自身を除く): 38182740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 79, 86, 97, 129, 158, 172, 194, 215, 237, 258, 291, 316, 388, 395, 430, 474, 485, 516, 582, 645, 790, 860, 948, 970, 1164, 1185, 1290, 1455, 1580, 1940, 2370, 2580, 2910, 3397, 4171, 4740, 5820, 6794, 7663, 8342, 10191, 12513, 13588, 15326, 16684, 16985, 20382, 20855, 22989, 25026, 30652, 33970, 38315, 40764, 41710, 45978, 50052, 50955, 62565, 67940, 76630, 83420, 91956, 101910, 114945, 125130, 153260, 203820, 229890, 250260, 329509, 459780, 659018, 988527, 1318036, 1647545, 1977054, 3295090, 3954108, 4942635, 6590180, 9885270, 19770540]

約数ペア:

[(1, 19770540), (2, 9885270), (3, 6590180), (4, 4942635), (5, 3954108), (6, 3295090), (10, 1977054), (12, 1647545), (15, 1318036), (20, 988527), (30, 659018), (43, 459780), (60, 329509), (79, 250260), (86, 229890), (97, 203820), (129, 153260), (158, 125130), (172, 114945), (194, 101910), (215, 91956), (237, 83420), (258, 76630), (291, 67940), (316, 62565), (388, 50955), (395, 50052), (430, 45978), (474, 41710), (485, 40764), (516, 38315), (582, 33970), (645, 30652), (790, 25026), (860, 22989), (948, 20855), (970, 20382), (1164, 16985), (1185, 16684), (1290, 15326), (1455, 13588), (1580, 12513), (1940, 10191), (2370, 8342), (2580, 7663), (2910, 6794), (3397, 5820), (4171, 4740)]