20905482

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 48254976

約数和(自身を除く): 27349494

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 43, 46, 69, 78, 86, 129, 138, 258, 271, 299, 542, 559, 598, 813, 897, 989, 1118, 1626, 1677, 1794, 1978, 2967, 3354, 3523, 5934, 6233, 7046, 10569, 11653, 12466, 12857, 18699, 21138, 23306, 25714, 34959, 37398, 38571, 69918, 77142, 81029, 151489, 162058, 243087, 268019, 302978, 454467, 486174, 536038, 804057, 908934, 1608114, 3484247, 6968494, 10452741, 20905482]

約数ペア:

[(1, 20905482), (2, 10452741), (3, 6968494), (6, 3484247), (13, 1608114), (23, 908934), (26, 804057), (39, 536038), (43, 486174), (46, 454467), (69, 302978), (78, 268019), (86, 243087), (129, 162058), (138, 151489), (258, 81029), (271, 77142), (299, 69918), (542, 38571), (559, 37398), (598, 34959), (813, 25714), (897, 23306), (989, 21138), (1118, 18699), (1626, 12857), (1677, 12466), (1794, 11653), (1978, 10569), (2967, 7046), (3354, 6233), (3523, 5934)]