20267792

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:471

約数の個数: 40

約数和(自身を含む): 40756320

約数和(自身を除く): 20488528

約数列:

[1, 2, 4, 8, 16, 43, 86, 89, 172, 178, 331, 344, 356, 662, 688, 712, 1324, 1424, 2648, 3827, 5296, 7654, 14233, 15308, 28466, 29459, 30616, 56932, 58918, 61232, 113864, 117836, 227728, 235672, 471344, 1266737, 2533474, 5066948, 10133896, 20267792]

約数ペア:

[(1, 20267792), (2, 10133896), (4, 5066948), (8, 2533474), (16, 1266737), (43, 471344), (86, 235672), (89, 227728), (172, 117836), (178, 113864), (331, 61232), (344, 58918), (356, 56932), (662, 30616), (688, 29459), (712, 28466), (1324, 15308), (1424, 14233), (2648, 7654), (3827, 5296)]