21531120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:199

約数の個数: 160

約数和(自身を含む): 73661952

約数和(自身を除く): 52130832

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 67, 78, 80, 103, 104, 120, 130, 134, 156, 195, 201, 206, 208, 240, 260, 268, 309, 312, 335, 390, 402, 412, 515, 520, 536, 618, 624, 670, 780, 804, 824, 871, 1005, 1030, 1040, 1072, 1236, 1339, 1340, 1545, 1560, 1608, 1648, 1742, 2010, 2060, 2472, 2613, 2678, 2680, 3090, 3120, 3216, 3484, 4017, 4020, 4120, 4355, 4944, 5226, 5356, 5360, 6180, 6695, 6901, 6968, 8034, 8040, 8240, 8710, 10452, 10712, 12360, 13065, 13390, 13802, 13936, 16068, 16080, 17420, 20085, 20703, 20904, 21424, 24720, 26130, 26780, 27604, 32136, 34505, 34840, 40170, 41406, 41808, 52260, 53560, 55208, 64272, 69010, 69680, 80340, 82812, 89713, 103515, 104520, 107120, 110416, 138020, 160680, 165624, 179426, 207030, 209040, 269139, 276040, 321360, 331248, 358852, 414060, 448565, 538278, 552080, 717704, 828120, 897130, 1076556, 1345695, 1435408, 1656240, 1794260, 2153112, 2691390, 3588520, 4306224, 5382780, 7177040, 10765560, 21531120]

約数ペア:

[(1, 21531120), (2, 10765560), (3, 7177040), (4, 5382780), (5, 4306224), (6, 3588520), (8, 2691390), (10, 2153112), (12, 1794260), (13, 1656240), (15, 1435408), (16, 1345695), (20, 1076556), (24, 897130), (26, 828120), (30, 717704), (39, 552080), (40, 538278), (48, 448565), (52, 414060), (60, 358852), (65, 331248), (67, 321360), (78, 276040), (80, 269139), (103, 209040), (104, 207030), (120, 179426), (130, 165624), (134, 160680), (156, 138020), (195, 110416), (201, 107120), (206, 104520), (208, 103515), (240, 89713), (260, 82812), (268, 80340), (309, 69680), (312, 69010), (335, 64272), (390, 55208), (402, 53560), (412, 52260), (515, 41808), (520, 41406), (536, 40170), (618, 34840), (624, 34505), (670, 32136), (780, 27604), (804, 26780), (824, 26130), (871, 24720), (1005, 21424), (1030, 20904), (1040, 20703), (1072, 20085), (1236, 17420), (1339, 16080), (1340, 16068), (1545, 13936), (1560, 13802), (1608, 13390), (1648, 13065), (1742, 12360), (2010, 10712), (2060, 10452), (2472, 8710), (2613, 8240), (2678, 8040), (2680, 8034), (3090, 6968), (3120, 6901), (3216, 6695), (3484, 6180), (4017, 5360), (4020, 5356), (4120, 5226), (4355, 4944)]