21178612

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{701}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 25052300

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 83, 91, 166, 182, 332, 364, 581, 701, 1079, 1162, 1402, 2158, 2324, 2804, 4316, 4907, 7553, 9113, 9814, 15106, 18226, 19628, 30212, 36452, 58183, 63791, 116366, 127582, 232732, 255164, 407281, 756379, 814562, 1512758, 1629124, 3025516, 5294653, 10589306, 21178612]

約数ペア:

[(1, 21178612), (2, 10589306), (4, 5294653), (7, 3025516), (13, 1629124), (14, 1512758), (26, 814562), (28, 756379), (52, 407281), (83, 255164), (91, 232732), (166, 127582), (182, 116366), (332, 63791), (364, 58183), (581, 36452), (701, 30212), (1079, 19628), (1162, 18226), (1402, 15106), (2158, 9814), (2324, 9113), (2804, 7553), (4316, 4907)]