638529164

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{4289}}^1$

素因数の和:4722

約数の個数: 48

約数和(自身を含む): 1378977600

約数和(自身を除く): 740448436

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 409, 818, 1636, 2863, 4289, 5317, 5726, 8578, 10634, 11452, 17156, 21268, 30023, 37219, 55757, 60046, 74438, 111514, 120092, 148876, 223028, 390299, 780598, 1561196, 1754201, 3508402, 7016804, 12279407, 22804613, 24558814, 45609226, 49117628, 91218452, 159632291, 319264582, 638529164]

約数ペア:

[(1, 638529164), (2, 319264582), (4, 159632291), (7, 91218452), (13, 49117628), (14, 45609226), (26, 24558814), (28, 22804613), (52, 12279407), (91, 7016804), (182, 3508402), (364, 1754201), (409, 1561196), (818, 780598), (1636, 390299), (2863, 223028), (4289, 148876), (5317, 120092), (5726, 111514), (8578, 74438), (10634, 60046), (11452, 55757), (17156, 37219), (21268, 30023)]