21240414

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{383}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 30369186

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 79, 117, 158, 234, 237, 351, 383, 474, 702, 711, 766, 1027, 1149, 1422, 2054, 2133, 2298, 3081, 3447, 4266, 4979, 6162, 6894, 9243, 9958, 10341, 14937, 18486, 20682, 27729, 29874, 30257, 44811, 55458, 60514, 89622, 90771, 134433, 181542, 268866, 272313, 393341, 544626, 786682, 816939, 1180023, 1633878, 2360046, 3540069, 7080138, 10620207, 21240414]

約数ペア:

[(1, 21240414), (2, 10620207), (3, 7080138), (6, 3540069), (9, 2360046), (13, 1633878), (18, 1180023), (26, 816939), (27, 786682), (39, 544626), (54, 393341), (78, 272313), (79, 268866), (117, 181542), (158, 134433), (234, 90771), (237, 89622), (351, 60514), (383, 55458), (474, 44811), (702, 30257), (711, 29874), (766, 27729), (1027, 20682), (1149, 18486), (1422, 14937), (2054, 10341), (2133, 9958), (2298, 9243), (3081, 6894), (3447, 6162), (4266, 4979)]