890449340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{523}}^1$

素因数の和:723

約数の個数: 96

約数和(自身を含む): 2091640320

約数和(自身を除く): 1201190980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 109, 110, 142, 218, 220, 284, 355, 436, 523, 545, 710, 781, 1046, 1090, 1199, 1420, 1562, 2092, 2180, 2398, 2615, 3124, 3905, 4796, 5230, 5753, 5995, 7739, 7810, 10460, 11506, 11990, 15478, 15620, 23012, 23980, 28765, 30956, 37133, 38695, 57007, 57530, 74266, 77390, 85129, 114014, 115060, 148532, 154780, 170258, 185665, 228028, 285035, 340516, 371330, 408463, 425645, 570070, 627077, 742660, 816926, 851290, 1140140, 1254154, 1633852, 1702580, 2042315, 2508308, 3135385, 4047497, 4084630, 6270770, 8094994, 8169260, 12541540, 16189988, 20237485, 40474970, 44522467, 80949940, 89044934, 178089868, 222612335, 445224670, 890449340]

約数ペア:

[(1, 890449340), (2, 445224670), (4, 222612335), (5, 178089868), (10, 89044934), (11, 80949940), (20, 44522467), (22, 40474970), (44, 20237485), (55, 16189988), (71, 12541540), (109, 8169260), (110, 8094994), (142, 6270770), (218, 4084630), (220, 4047497), (284, 3135385), (355, 2508308), (436, 2042315), (523, 1702580), (545, 1633852), (710, 1254154), (781, 1140140), (1046, 851290), (1090, 816926), (1199, 742660), (1420, 627077), (1562, 570070), (2092, 425645), (2180, 408463), (2398, 371330), (2615, 340516), (3124, 285035), (3905, 228028), (4796, 185665), (5230, 170258), (5753, 154780), (5995, 148532), (7739, 115060), (7810, 114014), (10460, 85129), (11506, 77390), (11990, 74266), (15478, 57530), (15620, 57007), (23012, 38695), (23980, 37133), (28765, 30956)]