20942584

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2549}}^1$

素因数の和:2647

約数の個数: 32

約数和(自身を含む): 42840000

約数和(自身を除く): 21897416

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2549, 4108, 5098, 8216, 10196, 20392, 33137, 66274, 132548, 201371, 265096, 402742, 805484, 1610968, 2617823, 5235646, 10471292, 20942584]

約数ペア:

[(1, 20942584), (2, 10471292), (4, 5235646), (8, 2617823), (13, 1610968), (26, 805484), (52, 402742), (79, 265096), (104, 201371), (158, 132548), (316, 66274), (632, 33137), (1027, 20392), (2054, 10196), (2549, 8216), (4108, 5098)]