18986715

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{317}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 36313056

約数和(自身を除く): 17326341

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 317, 363, 495, 605, 951, 1089, 1331, 1585, 1815, 2853, 3487, 3993, 4755, 5445, 6655, 10461, 11979, 14265, 17435, 19965, 31383, 38357, 52305, 59895, 115071, 156915, 191785, 345213, 421927, 575355, 1265781, 1726065, 2109635, 3797343, 6328905, 18986715]

約数ペア:

[(1, 18986715), (3, 6328905), (5, 3797343), (9, 2109635), (11, 1726065), (15, 1265781), (33, 575355), (45, 421927), (55, 345213), (99, 191785), (121, 156915), (165, 115071), (317, 59895), (363, 52305), (495, 38357), (605, 31383), (951, 19965), (1089, 17435), (1331, 14265), (1585, 11979), (1815, 10461), (2853, 6655), (3487, 5445), (3993, 4755)]