19988226

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{787}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 46466784

約数和(自身を除く): 26478558

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 83, 102, 153, 166, 249, 306, 498, 747, 787, 1411, 1494, 1574, 2361, 2822, 4233, 4722, 7083, 8466, 12699, 13379, 14166, 25398, 26758, 40137, 65321, 80274, 120411, 130642, 195963, 240822, 391926, 587889, 1110457, 1175778, 2220914, 3331371, 6662742, 9994113, 19988226]

約数ペア:

[(1, 19988226), (2, 9994113), (3, 6662742), (6, 3331371), (9, 2220914), (17, 1175778), (18, 1110457), (34, 587889), (51, 391926), (83, 240822), (102, 195963), (153, 130642), (166, 120411), (249, 80274), (306, 65321), (498, 40137), (747, 26758), (787, 25398), (1411, 14166), (1494, 13379), (1574, 12699), (2361, 8466), (2822, 7083), (4233, 4722)]