1997005912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{457}}^1$

素因数の和:641

約数の個数: 128

約数和(自身を含む): 4558602240

約数和(自身を除く): 2561596328

約数列:

[1, 2, 4, 8, 11, 17, 22, 23, 34, 44, 46, 68, 88, 92, 127, 136, 184, 187, 253, 254, 374, 391, 457, 506, 508, 748, 782, 914, 1012, 1016, 1397, 1496, 1564, 1828, 2024, 2159, 2794, 2921, 3128, 3656, 4301, 4318, 5027, 5588, 5842, 7769, 8602, 8636, 10054, 10511, 11176, 11684, 15538, 17204, 17272, 20108, 21022, 23368, 23749, 31076, 32131, 34408, 40216, 42044, 47498, 49657, 58039, 62152, 64262, 84088, 85459, 94996, 99314, 115621, 116078, 128524, 170918, 178687, 189992, 198628, 231242, 232156, 257048, 341836, 357374, 397256, 462484, 464312, 546227, 638429, 683672, 714748, 924968, 986663, 1092454, 1276858, 1334897, 1429496, 1965557, 1973326, 2184908, 2553716, 2669794, 3931114, 3946652, 4369816, 5107432, 5339588, 7862228, 7893304, 10679176, 10853293, 14683867, 15724456, 21706586, 22693249, 29367734, 43413172, 45386498, 58735468, 86826344, 90772996, 117470936, 181545992, 249625739, 499251478, 998502956, 1997005912]

約数ペア:

[(1, 1997005912), (2, 998502956), (4, 499251478), (8, 249625739), (11, 181545992), (17, 117470936), (22, 90772996), (23, 86826344), (34, 58735468), (44, 45386498), (46, 43413172), (68, 29367734), (88, 22693249), (92, 21706586), (127, 15724456), (136, 14683867), (184, 10853293), (187, 10679176), (253, 7893304), (254, 7862228), (374, 5339588), (391, 5107432), (457, 4369816), (506, 3946652), (508, 3931114), (748, 2669794), (782, 2553716), (914, 2184908), (1012, 1973326), (1016, 1965557), (1397, 1429496), (1496, 1334897), (1564, 1276858), (1828, 1092454), (2024, 986663), (2159, 924968), (2794, 714748), (2921, 683672), (3128, 638429), (3656, 546227), (4301, 464312), (4318, 462484), (5027, 397256), (5588, 357374), (5842, 341836), (7769, 257048), (8602, 232156), (8636, 231242), (10054, 198628), (10511, 189992), (11176, 178687), (11684, 170918), (15538, 128524), (17204, 116078), (17272, 115621), (20108, 99314), (21022, 94996), (23368, 85459), (23749, 84088), (31076, 64262), (32131, 62152), (34408, 58039), (40216, 49657), (42044, 47498)]