20121120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 69877080

約数和(自身を除く): 49755960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 89, 90, 96, 120, 144, 157, 160, 178, 180, 240, 267, 288, 314, 356, 360, 445, 471, 480, 534, 628, 712, 720, 785, 801, 890, 942, 1068, 1256, 1335, 1413, 1424, 1440, 1570, 1602, 1780, 1884, 2136, 2355, 2512, 2670, 2826, 2848, 3140, 3204, 3560, 3768, 4005, 4272, 4710, 5024, 5340, 5652, 6280, 6408, 7065, 7120, 7536, 8010, 8544, 9420, 10680, 11304, 12560, 12816, 13973, 14130, 14240, 15072, 16020, 18840, 21360, 22608, 25120, 25632, 27946, 28260, 32040, 37680, 41919, 42720, 45216, 55892, 56520, 64080, 69865, 75360, 83838, 111784, 113040, 125757, 128160, 139730, 167676, 209595, 223568, 226080, 251514, 279460, 335352, 419190, 447136, 503028, 558920, 628785, 670704, 838380, 1006056, 1117840, 1257570, 1341408, 1676760, 2012112, 2235680, 2515140, 3353520, 4024224, 5030280, 6707040, 10060560, 20121120]

約数ペア:

[(1, 20121120), (2, 10060560), (3, 6707040), (4, 5030280), (5, 4024224), (6, 3353520), (8, 2515140), (9, 2235680), (10, 2012112), (12, 1676760), (15, 1341408), (16, 1257570), (18, 1117840), (20, 1006056), (24, 838380), (30, 670704), (32, 628785), (36, 558920), (40, 503028), (45, 447136), (48, 419190), (60, 335352), (72, 279460), (80, 251514), (89, 226080), (90, 223568), (96, 209595), (120, 167676), (144, 139730), (157, 128160), (160, 125757), (178, 113040), (180, 111784), (240, 83838), (267, 75360), (288, 69865), (314, 64080), (356, 56520), (360, 55892), (445, 45216), (471, 42720), (480, 41919), (534, 37680), (628, 32040), (712, 28260), (720, 27946), (785, 25632), (801, 25120), (890, 22608), (942, 21360), (1068, 18840), (1256, 16020), (1335, 15072), (1413, 14240), (1424, 14130), (1440, 13973), (1570, 12816), (1602, 12560), (1780, 11304), (1884, 10680), (2136, 9420), (2355, 8544), (2512, 8010), (2670, 7536), (2826, 7120), (2848, 7065), (3140, 6408), (3204, 6280), (3560, 5652), (3768, 5340), (4005, 5024), (4272, 4710)]