21417280

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:192

約数の個数: 112

約数和(自身を含む): 56180736

約数和(自身を除く): 34763456

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 127, 136, 155, 160, 170, 248, 254, 272, 310, 320, 340, 496, 508, 527, 544, 620, 635, 680, 992, 1016, 1054, 1088, 1240, 1270, 1360, 1984, 2032, 2108, 2159, 2480, 2540, 2635, 2720, 3937, 4064, 4216, 4318, 4960, 5080, 5270, 5440, 7874, 8128, 8432, 8636, 9920, 10160, 10540, 10795, 15748, 16864, 17272, 19685, 20320, 21080, 21590, 31496, 33728, 34544, 39370, 40640, 42160, 43180, 62992, 66929, 69088, 78740, 84320, 86360, 125984, 133858, 138176, 157480, 168640, 172720, 251968, 267716, 314960, 334645, 345440, 535432, 629920, 669290, 690880, 1070864, 1259840, 1338580, 2141728, 2677160, 4283456, 5354320, 10708640, 21417280]

約数ペア:

[(1, 21417280), (2, 10708640), (4, 5354320), (5, 4283456), (8, 2677160), (10, 2141728), (16, 1338580), (17, 1259840), (20, 1070864), (31, 690880), (32, 669290), (34, 629920), (40, 535432), (62, 345440), (64, 334645), (68, 314960), (80, 267716), (85, 251968), (124, 172720), (127, 168640), (136, 157480), (155, 138176), (160, 133858), (170, 125984), (248, 86360), (254, 84320), (272, 78740), (310, 69088), (320, 66929), (340, 62992), (496, 43180), (508, 42160), (527, 40640), (544, 39370), (620, 34544), (635, 33728), (680, 31496), (992, 21590), (1016, 21080), (1054, 20320), (1088, 19685), (1240, 17272), (1270, 16864), (1360, 15748), (1984, 10795), (2032, 10540), (2108, 10160), (2159, 9920), (2480, 8636), (2540, 8432), (2635, 8128), (2720, 7874), (3937, 5440), (4064, 5270), (4216, 5080), (4318, 4960)]