20195005551

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{72617}}^1$

素因数の和:72704

約数の個数: 64

約数和(自身を含む): 35135493120

約数和(自身を除く): 14940487569

約数列:

[1, 3, 7, 17, 19, 21, 41, 51, 57, 119, 123, 133, 287, 323, 357, 399, 697, 779, 861, 969, 2091, 2261, 2337, 4879, 5453, 6783, 13243, 14637, 16359, 39729, 72617, 92701, 217851, 278103, 508319, 1234489, 1379723, 1524957, 2977297, 3703467, 4139169, 8641423, 8931891, 9658061, 20841079, 23455291, 25924269, 28974183, 50614049, 56568643, 62523237, 70365873, 151842147, 164187037, 169705929, 354298343, 395980501, 492561111, 961666931, 1062895029, 1187941503, 2885000793, 6731668517, 20195005551]

約数ペア:

[(1, 20195005551), (3, 6731668517), (7, 2885000793), (17, 1187941503), (19, 1062895029), (21, 961666931), (41, 492561111), (51, 395980501), (57, 354298343), (119, 169705929), (123, 164187037), (133, 151842147), (287, 70365873), (323, 62523237), (357, 56568643), (399, 50614049), (697, 28974183), (779, 25924269), (861, 23455291), (969, 20841079), (2091, 9658061), (2261, 8931891), (2337, 8641423), (4879, 4139169), (5453, 3703467), (6783, 2977297), (13243, 1524957), (14637, 1379723), (16359, 1234489), (39729, 508319), (72617, 278103), (92701, 217851)]