155139985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 252887040

約数和(自身を除く): 97747055

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 139, 143, 223, 385, 455, 695, 715, 973, 1001, 1115, 1529, 1561, 1807, 2453, 2899, 4865, 5005, 7645, 7805, 9035, 10703, 12265, 12649, 14495, 17171, 19877, 20293, 30997, 31889, 53515, 63245, 85855, 99385, 101465, 139139, 154985, 159445, 216979, 223223, 340967, 402961, 695695, 1084895, 1116115, 1704835, 2014805, 2386769, 2820727, 4432571, 11933845, 14103635, 22162855, 31027997, 155139985]

約数ペア:

[(1, 155139985), (5, 31027997), (7, 22162855), (11, 14103635), (13, 11933845), (35, 4432571), (55, 2820727), (65, 2386769), (77, 2014805), (91, 1704835), (139, 1116115), (143, 1084895), (223, 695695), (385, 402961), (455, 340967), (695, 223223), (715, 216979), (973, 159445), (1001, 154985), (1115, 139139), (1529, 101465), (1561, 99385), (1807, 85855), (2453, 63245), (2899, 53515), (4865, 31889), (5005, 30997), (7645, 20293), (7805, 19877), (9035, 17171), (10703, 14495), (12265, 12649)]