21981170

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 44706816

約数和(自身を除く): 22725646

約数列:

[1, 2, 5, 10, 17, 31, 34, 43, 62, 85, 86, 97, 155, 170, 194, 215, 310, 430, 485, 527, 731, 970, 1054, 1333, 1462, 1649, 2635, 2666, 3007, 3298, 3655, 4171, 5270, 6014, 6665, 7310, 8245, 8342, 13330, 15035, 16490, 20855, 22661, 30070, 41710, 45322, 51119, 70907, 102238, 113305, 129301, 141814, 226610, 255595, 258602, 354535, 511190, 646505, 709070, 1293010, 2198117, 4396234, 10990585, 21981170]

約数ペア:

[(1, 21981170), (2, 10990585), (5, 4396234), (10, 2198117), (17, 1293010), (31, 709070), (34, 646505), (43, 511190), (62, 354535), (85, 258602), (86, 255595), (97, 226610), (155, 141814), (170, 129301), (194, 113305), (215, 102238), (310, 70907), (430, 51119), (485, 45322), (527, 41710), (731, 30070), (970, 22661), (1054, 20855), (1333, 16490), (1462, 15035), (1649, 13330), (2635, 8342), (2666, 8245), (3007, 7310), (3298, 6665), (3655, 6014), (4171, 5270)]