21359403

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 35604480

約数和(自身を除く): 14245077

約数列:

[1, 3, 9, 13, 27, 31, 39, 93, 117, 151, 169, 279, 351, 403, 453, 507, 837, 1209, 1359, 1521, 1963, 3627, 4077, 4563, 4681, 5239, 5889, 10881, 14043, 15717, 17667, 25519, 42129, 47151, 53001, 60853, 76557, 126387, 141453, 182559, 229671, 547677, 689013, 791089, 1643031, 2373267, 7119801, 21359403]

約数ペア:

[(1, 21359403), (3, 7119801), (9, 2373267), (13, 1643031), (27, 791089), (31, 689013), (39, 547677), (93, 229671), (117, 182559), (151, 141453), (169, 126387), (279, 76557), (351, 60853), (403, 53001), (453, 47151), (507, 42129), (837, 25519), (1209, 17667), (1359, 15717), (1521, 14043), (1963, 10881), (3627, 5889), (4077, 5239), (4563, 4681)]