21161840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:127

約数の個数: 160

約数和(自身を含む): 61710336

約数和(自身を除く): 40548496

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 31, 35, 40, 46, 53, 56, 62, 70, 80, 92, 106, 112, 115, 124, 140, 155, 161, 184, 212, 217, 230, 248, 265, 280, 310, 322, 368, 371, 424, 434, 460, 496, 530, 560, 620, 644, 713, 742, 805, 848, 868, 920, 1060, 1085, 1219, 1240, 1288, 1426, 1484, 1610, 1643, 1736, 1840, 1855, 2120, 2170, 2438, 2480, 2576, 2852, 2968, 3220, 3286, 3472, 3565, 3710, 4240, 4340, 4876, 4991, 5704, 5936, 6095, 6440, 6572, 7130, 7420, 8215, 8533, 8680, 9752, 9982, 11408, 11501, 12190, 12880, 13144, 14260, 14840, 16430, 17066, 17360, 19504, 19964, 23002, 24380, 24955, 26288, 28520, 29680, 32860, 34132, 37789, 39928, 42665, 46004, 48760, 49910, 57040, 57505, 65720, 68264, 75578, 79856, 85330, 92008, 97520, 99820, 115010, 131440, 136528, 151156, 170660, 184016, 188945, 199640, 230020, 264523, 302312, 341320, 377890, 399280, 460040, 529046, 604624, 682640, 755780, 920080, 1058092, 1322615, 1511560, 2116184, 2645230, 3023120, 4232368, 5290460, 10580920, 21161840]

約数ペア:

[(1, 21161840), (2, 10580920), (4, 5290460), (5, 4232368), (7, 3023120), (8, 2645230), (10, 2116184), (14, 1511560), (16, 1322615), (20, 1058092), (23, 920080), (28, 755780), (31, 682640), (35, 604624), (40, 529046), (46, 460040), (53, 399280), (56, 377890), (62, 341320), (70, 302312), (80, 264523), (92, 230020), (106, 199640), (112, 188945), (115, 184016), (124, 170660), (140, 151156), (155, 136528), (161, 131440), (184, 115010), (212, 99820), (217, 97520), (230, 92008), (248, 85330), (265, 79856), (280, 75578), (310, 68264), (322, 65720), (368, 57505), (371, 57040), (424, 49910), (434, 48760), (460, 46004), (496, 42665), (530, 39928), (560, 37789), (620, 34132), (644, 32860), (713, 29680), (742, 28520), (805, 26288), (848, 24955), (868, 24380), (920, 23002), (1060, 19964), (1085, 19504), (1219, 17360), (1240, 17066), (1288, 16430), (1426, 14840), (1484, 14260), (1610, 13144), (1643, 12880), (1736, 12190), (1840, 11501), (1855, 11408), (2120, 9982), (2170, 9752), (2438, 8680), (2480, 8533), (2576, 8215), (2852, 7420), (2968, 7130), (3220, 6572), (3286, 6440), (3472, 6095), (3565, 5936), (3710, 5704), (4240, 4991), (4340, 4876)]