19995111493

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{311}}^1\times {\mathrm{521}}^1$

素因数の和:934

約数の個数: 48

約数和(自身を含む): 24799627008

約数和(自身を除く): 4804515515

約数列:

[1, 7, 17, 61, 119, 289, 311, 427, 521, 1037, 2023, 2177, 3647, 5287, 7259, 8857, 17629, 18971, 31781, 37009, 61999, 89879, 123403, 132797, 150569, 162031, 222467, 322507, 540277, 629153, 1053983, 1134217, 2257549, 2754527, 3781939, 5482619, 9184709, 9883891, 19281689, 38378333, 46826959, 64292963, 69187237, 168026147, 327788713, 1176183029, 2856444499, 19995111493]

約数ペア:

[(1, 19995111493), (7, 2856444499), (17, 1176183029), (61, 327788713), (119, 168026147), (289, 69187237), (311, 64292963), (427, 46826959), (521, 38378333), (1037, 19281689), (2023, 9883891), (2177, 9184709), (3647, 5482619), (5287, 3781939), (7259, 2754527), (8857, 2257549), (17629, 1134217), (18971, 1053983), (31781, 629153), (37009, 540277), (61999, 322507), (89879, 222467), (123403, 162031), (132797, 150569)]