998996817

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 1679892480

約数和(自身を除く): 680895663

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 239, 251, 273, 427, 717, 753, 793, 1281, 1673, 1757, 2379, 3107, 3263, 5019, 5271, 5551, 9321, 9789, 14579, 15311, 16653, 21749, 22841, 43737, 45933, 59989, 65247, 68523, 102053, 107177, 179967, 189527, 199043, 306159, 321531, 419923, 568581, 597129, 779857, 1259769, 1326689, 1393301, 2339571, 3659329, 3980067, 4179903, 5458999, 10977987, 16376997, 25615303, 47571277, 76845909, 142713831, 332998939, 998996817]

約数ペア:

[(1, 998996817), (3, 332998939), (7, 142713831), (13, 76845909), (21, 47571277), (39, 25615303), (61, 16376997), (91, 10977987), (183, 5458999), (239, 4179903), (251, 3980067), (273, 3659329), (427, 2339571), (717, 1393301), (753, 1326689), (793, 1259769), (1281, 779857), (1673, 597129), (1757, 568581), (2379, 419923), (3107, 321531), (3263, 306159), (5019, 199043), (5271, 189527), (5551, 179967), (9321, 107177), (9789, 102053), (14579, 68523), (15311, 65247), (16653, 59989), (21749, 45933), (22841, 43737)]