21187812

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 53681376

約数和(自身を除く): 32493564

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 67, 73, 76, 114, 134, 146, 201, 219, 228, 268, 292, 361, 402, 438, 722, 804, 876, 1083, 1273, 1387, 1444, 2166, 2546, 2774, 3819, 4161, 4332, 4891, 5092, 5548, 7638, 8322, 9782, 14673, 15276, 16644, 19564, 24187, 26353, 29346, 48374, 52706, 58692, 72561, 79059, 92929, 96748, 105412, 145122, 158118, 185858, 278787, 290244, 316236, 371716, 557574, 1115148, 1765651, 3531302, 5296953, 7062604, 10593906, 21187812]

約数ペア:

[(1, 21187812), (2, 10593906), (3, 7062604), (4, 5296953), (6, 3531302), (12, 1765651), (19, 1115148), (38, 557574), (57, 371716), (67, 316236), (73, 290244), (76, 278787), (114, 185858), (134, 158118), (146, 145122), (201, 105412), (219, 96748), (228, 92929), (268, 79059), (292, 72561), (361, 58692), (402, 52706), (438, 48374), (722, 29346), (804, 26353), (876, 24187), (1083, 19564), (1273, 16644), (1387, 15276), (1444, 14673), (2166, 9782), (2546, 8322), (2774, 7638), (3819, 5548), (4161, 5092), (4332, 4891)]