21340116

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4457}}^1$

素因数の和:4493

約数の個数: 72

約数和(自身を含む): 64908480

約数和(自身を除く): 43568364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4457, 4788, 8914, 13371, 17828, 26742, 31199, 40113, 53484, 62398, 80226, 84683, 93597, 124796, 160452, 169366, 187194, 254049, 280791, 338732, 374388, 508098, 561582, 592781, 762147, 1016196, 1123164, 1185562, 1524294, 1778343, 2371124, 3048588, 3556686, 5335029, 7113372, 10670058, 21340116]

約数ペア:

[(1, 21340116), (2, 10670058), (3, 7113372), (4, 5335029), (6, 3556686), (7, 3048588), (9, 2371124), (12, 1778343), (14, 1524294), (18, 1185562), (19, 1123164), (21, 1016196), (28, 762147), (36, 592781), (38, 561582), (42, 508098), (57, 374388), (63, 338732), (76, 280791), (84, 254049), (114, 187194), (126, 169366), (133, 160452), (171, 124796), (228, 93597), (252, 84683), (266, 80226), (342, 62398), (399, 53484), (532, 40113), (684, 31199), (798, 26742), (1197, 17828), (1596, 13371), (2394, 8914), (4457, 4788)]