21000000618

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^2\times {\mathrm{4036909}}^1$

素因数の和:4036951

約数の個数: 36

約数和(自身を含む): 48333923430

約数和(自身を除く): 27333922812

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 289, 306, 578, 867, 1734, 2601, 5202, 4036909, 8073818, 12110727, 24221454, 36332181, 68627453, 72664362, 137254906, 205882359, 411764718, 617647077, 1166666701, 1235294154, 2333333402, 3500000103, 7000000206, 10500000309, 21000000618]

約数ペア:

[(1, 21000000618), (2, 10500000309), (3, 7000000206), (6, 3500000103), (9, 2333333402), (17, 1235294154), (18, 1166666701), (34, 617647077), (51, 411764718), (102, 205882359), (153, 137254906), (289, 72664362), (306, 68627453), (578, 36332181), (867, 24221454), (1734, 12110727), (2601, 8073818), (5202, 4036909)]