21878402

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{1321}}^1$

素因数の和:1363

約数の個数: 36

約数和(自身を含む): 41369346

約数和(自身を除く): 19490944

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 169, 182, 338, 637, 1183, 1274, 1321, 2366, 2642, 8281, 9247, 16562, 17173, 18494, 34346, 64729, 120211, 129458, 223249, 240422, 446498, 841477, 1562743, 1682954, 3125486, 10939201, 21878402]

約数ペア:

[(1, 21878402), (2, 10939201), (7, 3125486), (13, 1682954), (14, 1562743), (26, 841477), (49, 446498), (91, 240422), (98, 223249), (169, 129458), (182, 120211), (338, 64729), (637, 34346), (1183, 18494), (1274, 17173), (1321, 16562), (2366, 9247), (2642, 8281)]