21178320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1117}}^1$

素因数の和:1212

約数の個数: 80

約数和(自身を含む): 66543360

約数和(自身を除く): 45365040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 79, 80, 120, 158, 237, 240, 316, 395, 474, 632, 790, 948, 1117, 1185, 1264, 1580, 1896, 2234, 2370, 3160, 3351, 3792, 4468, 4740, 5585, 6320, 6702, 8936, 9480, 11170, 13404, 16755, 17872, 18960, 22340, 26808, 33510, 44680, 53616, 67020, 88243, 89360, 134040, 176486, 264729, 268080, 352972, 441215, 529458, 705944, 882430, 1058916, 1323645, 1411888, 1764860, 2117832, 2647290, 3529720, 4235664, 5294580, 7059440, 10589160, 21178320]

約数ペア:

[(1, 21178320), (2, 10589160), (3, 7059440), (4, 5294580), (5, 4235664), (6, 3529720), (8, 2647290), (10, 2117832), (12, 1764860), (15, 1411888), (16, 1323645), (20, 1058916), (24, 882430), (30, 705944), (40, 529458), (48, 441215), (60, 352972), (79, 268080), (80, 264729), (120, 176486), (158, 134040), (237, 89360), (240, 88243), (316, 67020), (395, 53616), (474, 44680), (632, 33510), (790, 26808), (948, 22340), (1117, 18960), (1185, 17872), (1264, 16755), (1580, 13404), (1896, 11170), (2234, 9480), (2370, 8936), (3160, 6702), (3351, 6320), (3792, 5585), (4468, 4740)]