28084840

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 128

約数和(自身を含む): 77760000

約数和(自身を除く): 49675160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 49, 56, 70, 89, 92, 98, 115, 140, 161, 178, 184, 196, 230, 245, 280, 322, 343, 356, 392, 445, 460, 490, 623, 644, 686, 712, 805, 890, 920, 980, 1127, 1246, 1288, 1372, 1610, 1715, 1780, 1960, 2047, 2254, 2492, 2744, 3115, 3220, 3430, 3560, 4094, 4361, 4508, 4984, 5635, 6230, 6440, 6860, 7889, 8188, 8722, 9016, 10235, 11270, 12460, 13720, 14329, 15778, 16376, 17444, 20470, 21805, 22540, 24920, 28658, 30527, 31556, 34888, 39445, 40940, 43610, 45080, 57316, 61054, 63112, 71645, 78890, 81880, 87220, 100303, 114632, 122108, 143290, 152635, 157780, 174440, 200606, 244216, 286580, 305270, 315560, 401212, 501515, 573160, 610540, 702121, 802424, 1003030, 1221080, 1404242, 2006060, 2808484, 3510605, 4012120, 5616968, 7021210, 14042420, 28084840]

約数ペア:

[(1, 28084840), (2, 14042420), (4, 7021210), (5, 5616968), (7, 4012120), (8, 3510605), (10, 2808484), (14, 2006060), (20, 1404242), (23, 1221080), (28, 1003030), (35, 802424), (40, 702121), (46, 610540), (49, 573160), (56, 501515), (70, 401212), (89, 315560), (92, 305270), (98, 286580), (115, 244216), (140, 200606), (161, 174440), (178, 157780), (184, 152635), (196, 143290), (230, 122108), (245, 114632), (280, 100303), (322, 87220), (343, 81880), (356, 78890), (392, 71645), (445, 63112), (460, 61054), (490, 57316), (623, 45080), (644, 43610), (686, 40940), (712, 39445), (805, 34888), (890, 31556), (920, 30527), (980, 28658), (1127, 24920), (1246, 22540), (1288, 21805), (1372, 20470), (1610, 17444), (1715, 16376), (1780, 15778), (1960, 14329), (2047, 13720), (2254, 12460), (2492, 11270), (2744, 10235), (3115, 9016), (3220, 8722), (3430, 8188), (3560, 7889), (4094, 6860), (4361, 6440), (4508, 6230), (4984, 5635)]