8400280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1579}}^1$

素因数の和:1616

約数の個数: 64

約数和(自身を含む): 22752000

約数和(自身を除く): 14351720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 1579, 2660, 3158, 5320, 6316, 7895, 11053, 12632, 15790, 22106, 30001, 31580, 44212, 55265, 60002, 63160, 88424, 110530, 120004, 150005, 210007, 221060, 240008, 300010, 420014, 442120, 600020, 840028, 1050035, 1200040, 1680056, 2100070, 4200140, 8400280]

約数ペア:

[(1, 8400280), (2, 4200140), (4, 2100070), (5, 1680056), (7, 1200040), (8, 1050035), (10, 840028), (14, 600020), (19, 442120), (20, 420014), (28, 300010), (35, 240008), (38, 221060), (40, 210007), (56, 150005), (70, 120004), (76, 110530), (95, 88424), (133, 63160), (140, 60002), (152, 55265), (190, 44212), (266, 31580), (280, 30001), (380, 22106), (532, 15790), (665, 12632), (760, 11053), (1064, 7895), (1330, 6316), (1579, 5320), (2660, 3158)]