19726640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:258

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 29127376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 71, 80, 92, 115, 142, 151, 184, 230, 284, 302, 355, 368, 460, 568, 604, 710, 755, 920, 1136, 1208, 1420, 1510, 1633, 1840, 2416, 2840, 3020, 3266, 3473, 5680, 6040, 6532, 6946, 8165, 10721, 12080, 13064, 13892, 16330, 17365, 21442, 26128, 27784, 32660, 34730, 42884, 53605, 55568, 65320, 69460, 85768, 107210, 130640, 138920, 171536, 214420, 246583, 277840, 428840, 493166, 857680, 986332, 1232915, 1972664, 2465830, 3945328, 4931660, 9863320, 19726640]

約数ペア:

[(1, 19726640), (2, 9863320), (4, 4931660), (5, 3945328), (8, 2465830), (10, 1972664), (16, 1232915), (20, 986332), (23, 857680), (40, 493166), (46, 428840), (71, 277840), (80, 246583), (92, 214420), (115, 171536), (142, 138920), (151, 130640), (184, 107210), (230, 85768), (284, 69460), (302, 65320), (355, 55568), (368, 53605), (460, 42884), (568, 34730), (604, 32660), (710, 27784), (755, 26128), (920, 21442), (1136, 17365), (1208, 16330), (1420, 13892), (1510, 13064), (1633, 12080), (1840, 10721), (2416, 8165), (2840, 6946), (3020, 6532), (3266, 6040), (3473, 5680)]