20646730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:695

約数の個数: 48

約数和(自身を含む): 42426720

約数和(自身を除く): 21779990

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 169, 190, 247, 338, 494, 643, 845, 1235, 1286, 1690, 2470, 3211, 3215, 6422, 6430, 8359, 12217, 16055, 16718, 24434, 32110, 41795, 61085, 83590, 108667, 122170, 158821, 217334, 317642, 543335, 794105, 1086670, 1588210, 2064673, 4129346, 10323365, 20646730]

約数ペア:

[(1, 20646730), (2, 10323365), (5, 4129346), (10, 2064673), (13, 1588210), (19, 1086670), (26, 794105), (38, 543335), (65, 317642), (95, 217334), (130, 158821), (169, 122170), (190, 108667), (247, 83590), (338, 61085), (494, 41795), (643, 32110), (845, 24434), (1235, 16718), (1286, 16055), (1690, 12217), (2470, 8359), (3211, 6430), (3215, 6422)]