19913691

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1721}}^1$

素因数の和:1779

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 13148709

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1721, 3857, 5163, 11571, 12047, 32699, 36141, 49909, 98097, 149727, 228893, 349363, 686679, 948271, 1048089, 2844813, 6637897, 19913691]

約数ペア:

[(1, 19913691), (3, 6637897), (7, 2844813), (19, 1048089), (21, 948271), (29, 686679), (57, 349363), (87, 228893), (133, 149727), (203, 98097), (399, 49909), (551, 36141), (609, 32699), (1653, 12047), (1721, 11571), (3857, 5163)]