21872648

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 50294400

約数和(自身を除く): 28421752

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 61, 76, 122, 133, 152, 244, 266, 337, 427, 488, 532, 674, 854, 1064, 1159, 1348, 1708, 2318, 2359, 2696, 3416, 4636, 4718, 6403, 8113, 9272, 9436, 12806, 16226, 18872, 20557, 25612, 32452, 41114, 44821, 51224, 64904, 82228, 89642, 143899, 164456, 179284, 287798, 358568, 390583, 575596, 781166, 1151192, 1562332, 2734081, 3124664, 5468162, 10936324, 21872648]

約数ペア:

[(1, 21872648), (2, 10936324), (4, 5468162), (7, 3124664), (8, 2734081), (14, 1562332), (19, 1151192), (28, 781166), (38, 575596), (56, 390583), (61, 358568), (76, 287798), (122, 179284), (133, 164456), (152, 143899), (244, 89642), (266, 82228), (337, 64904), (427, 51224), (488, 44821), (532, 41114), (674, 32452), (854, 25612), (1064, 20557), (1159, 18872), (1348, 16226), (1708, 12806), (2318, 9436), (2359, 9272), (2696, 8113), (3416, 6403), (4636, 4718)]