27980820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:494

約数の個数: 144

約数和(自身を含む): 99066240

約数和(自身を除く): 71085420

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 53, 60, 63, 70, 84, 90, 105, 106, 126, 140, 159, 180, 210, 212, 252, 265, 315, 318, 371, 419, 420, 477, 530, 630, 636, 742, 795, 838, 954, 1060, 1113, 1257, 1260, 1484, 1590, 1676, 1855, 1908, 2095, 2226, 2385, 2514, 2933, 3180, 3339, 3710, 3771, 4190, 4452, 4770, 5028, 5565, 5866, 6285, 6678, 7420, 7542, 8380, 8799, 9540, 11130, 11732, 12570, 13356, 14665, 15084, 16695, 17598, 18855, 22207, 22260, 25140, 26397, 29330, 33390, 35196, 37710, 43995, 44414, 52794, 58660, 66621, 66780, 75420, 87990, 88828, 105588, 111035, 131985, 133242, 155449, 175980, 199863, 222070, 263970, 266484, 310898, 333105, 399726, 444140, 466347, 527940, 621796, 666210, 777245, 799452, 932694, 999315, 1332420, 1399041, 1554490, 1865388, 1998630, 2331735, 2798082, 3108980, 3997260, 4663470, 5596164, 6995205, 9326940, 13990410, 27980820]

約数ペア:

[(1, 27980820), (2, 13990410), (3, 9326940), (4, 6995205), (5, 5596164), (6, 4663470), (7, 3997260), (9, 3108980), (10, 2798082), (12, 2331735), (14, 1998630), (15, 1865388), (18, 1554490), (20, 1399041), (21, 1332420), (28, 999315), (30, 932694), (35, 799452), (36, 777245), (42, 666210), (45, 621796), (53, 527940), (60, 466347), (63, 444140), (70, 399726), (84, 333105), (90, 310898), (105, 266484), (106, 263970), (126, 222070), (140, 199863), (159, 175980), (180, 155449), (210, 133242), (212, 131985), (252, 111035), (265, 105588), (315, 88828), (318, 87990), (371, 75420), (419, 66780), (420, 66621), (477, 58660), (530, 52794), (630, 44414), (636, 43995), (742, 37710), (795, 35196), (838, 33390), (954, 29330), (1060, 26397), (1113, 25140), (1257, 22260), (1260, 22207), (1484, 18855), (1590, 17598), (1676, 16695), (1855, 15084), (1908, 14665), (2095, 13356), (2226, 12570), (2385, 11732), (2514, 11130), (2933, 9540), (3180, 8799), (3339, 8380), (3710, 7542), (3771, 7420), (4190, 6678), (4452, 6285), (4770, 5866), (5028, 5565)]