81853520

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:210

約数の個数: 160

約数和(自身を含む): 235104000

約数和(自身を除く): 153250480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 157, 190, 196, 245, 266, 280, 304, 314, 343, 380, 392, 490, 532, 560, 628, 665, 686, 760, 784, 785, 931, 980, 1064, 1099, 1256, 1330, 1372, 1520, 1570, 1715, 1862, 1960, 2128, 2198, 2512, 2660, 2744, 2983, 3140, 3430, 3724, 3920, 4396, 4655, 5320, 5488, 5495, 5966, 6280, 6517, 6860, 7448, 7693, 8792, 9310, 10640, 10990, 11932, 12560, 13034, 13720, 14896, 14915, 15386, 17584, 18620, 20881, 21980, 23864, 26068, 27440, 29830, 30772, 32585, 37240, 38465, 41762, 43960, 47728, 52136, 53851, 59660, 61544, 65170, 74480, 76930, 83524, 87920, 104272, 104405, 107702, 119320, 123088, 130340, 146167, 153860, 167048, 208810, 215404, 238640, 260680, 269255, 292334, 307720, 334096, 417620, 430808, 521360, 538510, 584668, 615440, 730835, 835240, 861616, 1023169, 1077020, 1169336, 1461670, 1670480, 2046338, 2154040, 2338672, 2923340, 4092676, 4308080, 5115845, 5846680, 8185352, 10231690, 11693360, 16370704, 20463380, 40926760, 81853520]

約数ペア:

[(1, 81853520), (2, 40926760), (4, 20463380), (5, 16370704), (7, 11693360), (8, 10231690), (10, 8185352), (14, 5846680), (16, 5115845), (19, 4308080), (20, 4092676), (28, 2923340), (35, 2338672), (38, 2154040), (40, 2046338), (49, 1670480), (56, 1461670), (70, 1169336), (76, 1077020), (80, 1023169), (95, 861616), (98, 835240), (112, 730835), (133, 615440), (140, 584668), (152, 538510), (157, 521360), (190, 430808), (196, 417620), (245, 334096), (266, 307720), (280, 292334), (304, 269255), (314, 260680), (343, 238640), (380, 215404), (392, 208810), (490, 167048), (532, 153860), (560, 146167), (628, 130340), (665, 123088), (686, 119320), (760, 107702), (784, 104405), (785, 104272), (931, 87920), (980, 83524), (1064, 76930), (1099, 74480), (1256, 65170), (1330, 61544), (1372, 59660), (1520, 53851), (1570, 52136), (1715, 47728), (1862, 43960), (1960, 41762), (2128, 38465), (2198, 37240), (2512, 32585), (2660, 30772), (2744, 29830), (2983, 27440), (3140, 26068), (3430, 23864), (3724, 21980), (3920, 20881), (4396, 18620), (4655, 17584), (5320, 15386), (5488, 14915), (5495, 14896), (5966, 13720), (6280, 13034), (6517, 12560), (6860, 11932), (7448, 10990), (7693, 10640), (8792, 9310)]