201720897

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{15773}}^1$

素因数の和:15822

約数の個数: 36

約数和(自身を含む): 350656020

約数和(自身を除く): 148935123

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1827, 4263, 12789, 15773, 47319, 110411, 141957, 331233, 457417, 772877, 993699, 1372251, 2318631, 3201919, 4116753, 6955893, 9605757, 22413433, 28817271, 67240299, 201720897]

約数ペア:

[(1, 201720897), (3, 67240299), (7, 28817271), (9, 22413433), (21, 9605757), (29, 6955893), (49, 4116753), (63, 3201919), (87, 2318631), (147, 1372251), (203, 993699), (261, 772877), (441, 457417), (609, 331233), (1421, 141957), (1827, 110411), (4263, 47319), (12789, 15773)]