21739025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 35140608

約数和(自身を除く): 13401583

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 115, 161, 175, 253, 275, 385, 491, 575, 805, 1265, 1771, 1925, 2455, 3437, 4025, 5401, 6325, 8855, 11293, 12275, 17185, 27005, 37807, 44275, 56465, 79051, 85925, 124223, 135025, 189035, 282325, 395255, 621115, 869561, 945175, 1976275, 3105575, 4347805, 21739025]

約数ペア:

[(1, 21739025), (5, 4347805), (7, 3105575), (11, 1976275), (23, 945175), (25, 869561), (35, 621115), (55, 395255), (77, 282325), (115, 189035), (161, 135025), (175, 124223), (253, 85925), (275, 79051), (385, 56465), (491, 44275), (575, 37807), (805, 27005), (1265, 17185), (1771, 12275), (1925, 11293), (2455, 8855), (3437, 6325), (4025, 5401)]