40481840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:499

約数の個数: 120

約数和(自身を含む): 114501600

約数和(自身を除く): 74019760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 115, 140, 161, 184, 196, 230, 245, 280, 322, 368, 392, 449, 460, 490, 560, 644, 784, 805, 898, 920, 980, 1127, 1288, 1610, 1796, 1840, 1960, 2245, 2254, 2576, 3143, 3220, 3592, 3920, 4490, 4508, 5635, 6286, 6440, 7184, 8980, 9016, 10327, 11270, 12572, 12880, 15715, 17960, 18032, 20654, 22001, 22540, 25144, 31430, 35920, 41308, 44002, 45080, 50288, 51635, 62860, 72289, 82616, 88004, 90160, 103270, 110005, 125720, 144578, 165232, 176008, 206540, 220010, 251440, 289156, 352016, 361445, 413080, 440020, 506023, 578312, 722890, 826160, 880040, 1012046, 1156624, 1445780, 1760080, 2024092, 2530115, 2891560, 4048184, 5060230, 5783120, 8096368, 10120460, 20240920, 40481840]

約数ペア:

[(1, 40481840), (2, 20240920), (4, 10120460), (5, 8096368), (7, 5783120), (8, 5060230), (10, 4048184), (14, 2891560), (16, 2530115), (20, 2024092), (23, 1760080), (28, 1445780), (35, 1156624), (40, 1012046), (46, 880040), (49, 826160), (56, 722890), (70, 578312), (80, 506023), (92, 440020), (98, 413080), (112, 361445), (115, 352016), (140, 289156), (161, 251440), (184, 220010), (196, 206540), (230, 176008), (245, 165232), (280, 144578), (322, 125720), (368, 110005), (392, 103270), (449, 90160), (460, 88004), (490, 82616), (560, 72289), (644, 62860), (784, 51635), (805, 50288), (898, 45080), (920, 44002), (980, 41308), (1127, 35920), (1288, 31430), (1610, 25144), (1796, 22540), (1840, 22001), (1960, 20654), (2245, 18032), (2254, 17960), (2576, 15715), (3143, 12880), (3220, 12572), (3592, 11270), (3920, 10327), (4490, 9016), (4508, 8980), (5635, 7184), (6286, 6440)]