17921007

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 56

約数和(自身を含む): 30359168

約数和(自身を除く): 12438161

約数列:

[1, 3, 9, 13, 27, 31, 39, 61, 81, 93, 117, 183, 243, 279, 351, 403, 549, 729, 793, 837, 1053, 1209, 1647, 1891, 2379, 2511, 3159, 3627, 4941, 5673, 7137, 7533, 9477, 10881, 14823, 17019, 21411, 22599, 24583, 32643, 44469, 51057, 64233, 73749, 97929, 153171, 192699, 221247, 293787, 459513, 578097, 663741, 1378539, 1991223, 5973669, 17921007]

約数ペア:

[(1, 17921007), (3, 5973669), (9, 1991223), (13, 1378539), (27, 663741), (31, 578097), (39, 459513), (61, 293787), (81, 221247), (93, 192699), (117, 153171), (183, 97929), (243, 73749), (279, 64233), (351, 51057), (403, 44469), (549, 32643), (729, 24583), (793, 22599), (837, 21411), (1053, 17019), (1209, 14823), (1647, 10881), (1891, 9477), (2379, 7533), (2511, 7137), (3159, 5673), (3627, 4941)]