20514172

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{607}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 23612036

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 71, 119, 142, 238, 284, 476, 497, 607, 994, 1207, 1214, 1988, 2414, 2428, 4249, 4828, 8449, 8498, 10319, 16898, 16996, 20638, 33796, 41276, 43097, 72233, 86194, 144466, 172388, 288932, 301679, 603358, 732649, 1206716, 1465298, 2930596, 5128543, 10257086, 20514172]

約数ペア:

[(1, 20514172), (2, 10257086), (4, 5128543), (7, 2930596), (14, 1465298), (17, 1206716), (28, 732649), (34, 603358), (68, 301679), (71, 288932), (119, 172388), (142, 144466), (238, 86194), (284, 72233), (476, 43097), (497, 41276), (607, 33796), (994, 20638), (1207, 16996), (1214, 16898), (1988, 10319), (2414, 8498), (2428, 8449), (4249, 4828)]