17801420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9781}}^1$

素因数の和:9810

約数の個数: 48

約数和(自身を含む): 46014528

約数和(自身を除く): 28213108

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 9781, 19562, 39124, 48905, 68467, 97810, 127153, 136934, 195620, 254306, 273868, 342335, 508612, 635765, 684670, 890071, 1271530, 1369340, 1780142, 2543060, 3560284, 4450355, 8900710, 17801420]

約数ペア:

[(1, 17801420), (2, 8900710), (4, 4450355), (5, 3560284), (7, 2543060), (10, 1780142), (13, 1369340), (14, 1271530), (20, 890071), (26, 684670), (28, 635765), (35, 508612), (52, 342335), (65, 273868), (70, 254306), (91, 195620), (130, 136934), (140, 127153), (182, 97810), (260, 68467), (364, 48905), (455, 39124), (910, 19562), (1820, 9781)]