178820820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2371}}^1$

素因数の和:2805

約数の個数: 72

約数和(自身を含む): 543947040

約数和(自身を除く): 365126220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 419, 838, 1257, 1676, 2095, 2371, 2514, 3771, 4190, 4742, 5028, 6285, 7113, 7542, 8380, 9484, 11855, 12570, 14226, 15084, 18855, 21339, 23710, 25140, 28452, 35565, 37710, 42678, 47420, 71130, 75420, 85356, 106695, 142260, 213390, 426780, 993449, 1986898, 2980347, 3973796, 4967245, 5960694, 8941041, 9934490, 11921388, 14901735, 17882082, 19868980, 29803470, 35764164, 44705205, 59606940, 89410410, 178820820]

約数ペア:

[(1, 178820820), (2, 89410410), (3, 59606940), (4, 44705205), (5, 35764164), (6, 29803470), (9, 19868980), (10, 17882082), (12, 14901735), (15, 11921388), (18, 9934490), (20, 8941041), (30, 5960694), (36, 4967245), (45, 3973796), (60, 2980347), (90, 1986898), (180, 993449), (419, 426780), (838, 213390), (1257, 142260), (1676, 106695), (2095, 85356), (2371, 75420), (2514, 71130), (3771, 47420), (4190, 42678), (4742, 37710), (5028, 35565), (6285, 28452), (7113, 25140), (7542, 23710), (8380, 21339), (9484, 18855), (11855, 15084), (12570, 14226)]