20621978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{7853}}^1$

素因数の和:7969

約数の個数: 16

約数和(自身を含む): 33646536

約数和(自身を除く): 13024558

約数列:

[1, 2, 13, 26, 101, 202, 1313, 2626, 7853, 15706, 102089, 204178, 793153, 1586306, 10310989, 20621978]

約数ペア:

[(1, 20621978), (2, 10310989), (13, 1586306), (26, 793153), (101, 204178), (202, 102089), (1313, 15706), (2626, 7853)]