171990320

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{443}}^1$

素因数の和:690

約数の個数: 80

約数和(自身を含む): 420187392

約数和(自身を除く): 248197072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 211, 230, 368, 422, 443, 460, 844, 886, 920, 1055, 1688, 1772, 1840, 2110, 2215, 3376, 3544, 4220, 4430, 4853, 7088, 8440, 8860, 9706, 10189, 16880, 17720, 19412, 20378, 24265, 35440, 38824, 40756, 48530, 50945, 77648, 81512, 93473, 97060, 101890, 163024, 186946, 194120, 203780, 373892, 388240, 407560, 467365, 747784, 815120, 934730, 1495568, 1869460, 2149879, 3738920, 4299758, 7477840, 8599516, 10749395, 17199032, 21498790, 34398064, 42997580, 85995160, 171990320]

約数ペア:

[(1, 171990320), (2, 85995160), (4, 42997580), (5, 34398064), (8, 21498790), (10, 17199032), (16, 10749395), (20, 8599516), (23, 7477840), (40, 4299758), (46, 3738920), (80, 2149879), (92, 1869460), (115, 1495568), (184, 934730), (211, 815120), (230, 747784), (368, 467365), (422, 407560), (443, 388240), (460, 373892), (844, 203780), (886, 194120), (920, 186946), (1055, 163024), (1688, 101890), (1772, 97060), (1840, 93473), (2110, 81512), (2215, 77648), (3376, 50945), (3544, 48530), (4220, 40756), (4430, 38824), (4853, 35440), (7088, 24265), (8440, 20378), (8860, 19412), (9706, 17720), (10189, 16880)]