20537307

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1249}}^1$

素因数の和:1297

約数の個数: 40

約数和(自身を含む): 36300000

約数和(自身を除く): 15762693

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1249, 1827, 2349, 3747, 5481, 8743, 11241, 16443, 26229, 33723, 36221, 78687, 101169, 108663, 236061, 253547, 325989, 708183, 760641, 977967, 2281923, 2933901, 6845769, 20537307]

約数ペア:

[(1, 20537307), (3, 6845769), (7, 2933901), (9, 2281923), (21, 977967), (27, 760641), (29, 708183), (63, 325989), (81, 253547), (87, 236061), (189, 108663), (203, 101169), (261, 78687), (567, 36221), (609, 33723), (783, 26229), (1249, 16443), (1827, 11241), (2349, 8743), (3747, 5481)]