19958224

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 90

約数和(自身を含む): 46779558

約数和(自身を除く): 26821334

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 61, 88, 104, 121, 122, 143, 169, 176, 208, 242, 244, 286, 338, 484, 488, 572, 671, 676, 793, 968, 976, 1144, 1342, 1352, 1573, 1586, 1859, 1936, 2288, 2684, 2704, 3146, 3172, 3718, 5368, 6292, 6344, 7381, 7436, 8723, 10309, 10736, 12584, 12688, 14762, 14872, 17446, 20449, 20618, 25168, 29524, 29744, 34892, 40898, 41236, 59048, 69784, 81796, 82472, 95953, 113399, 118096, 139568, 163592, 164944, 191906, 226798, 327184, 383812, 453596, 767624, 907192, 1247389, 1535248, 1814384, 2494778, 4989556, 9979112, 19958224]

約数ペア:

[(1, 19958224), (2, 9979112), (4, 4989556), (8, 2494778), (11, 1814384), (13, 1535248), (16, 1247389), (22, 907192), (26, 767624), (44, 453596), (52, 383812), (61, 327184), (88, 226798), (104, 191906), (121, 164944), (122, 163592), (143, 139568), (169, 118096), (176, 113399), (208, 95953), (242, 82472), (244, 81796), (286, 69784), (338, 59048), (484, 41236), (488, 40898), (572, 34892), (671, 29744), (676, 29524), (793, 25168), (968, 20618), (976, 20449), (1144, 17446), (1342, 14872), (1352, 14762), (1573, 12688), (1586, 12584), (1859, 10736), (1936, 10309), (2288, 8723), (2684, 7436), (2704, 7381), (3146, 6344), (3172, 6292), (3718, 5368)]