20890776

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{653}}^1$

素因数の和:736

約数の個数: 64

約数和(自身を含む): 55249920

約数和(自身を除く): 34359144

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 43, 62, 86, 93, 124, 129, 172, 186, 248, 258, 344, 372, 516, 653, 744, 1032, 1306, 1333, 1959, 2612, 2666, 3918, 3999, 5224, 5332, 7836, 7998, 10664, 15672, 15996, 20243, 28079, 31992, 40486, 56158, 60729, 80972, 84237, 112316, 121458, 161944, 168474, 224632, 242916, 336948, 485832, 673896, 870449, 1740898, 2611347, 3481796, 5222694, 6963592, 10445388, 20890776]

約数ペア:

[(1, 20890776), (2, 10445388), (3, 6963592), (4, 5222694), (6, 3481796), (8, 2611347), (12, 1740898), (24, 870449), (31, 673896), (43, 485832), (62, 336948), (86, 242916), (93, 224632), (124, 168474), (129, 161944), (172, 121458), (186, 112316), (248, 84237), (258, 80972), (344, 60729), (372, 56158), (516, 40486), (653, 31992), (744, 28079), (1032, 20243), (1306, 15996), (1333, 15672), (1959, 10664), (2612, 7998), (2666, 7836), (3918, 5332), (3999, 5224)]