216405840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{128813}}^1$

素因数の和:128836

約数の個数: 80

約数和(自身を含む): 766700928

約数和(自身を除く): 550295088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 128813, 257626, 386439, 515252, 644065, 772878, 901691, 1030504, 1288130, 1545756, 1803382, 1932195, 2061008, 2576260, 2705073, 3091512, 3606764, 3864390, 4508455, 5152520, 5410146, 6183024, 7213528, 7728780, 9016910, 10305040, 10820292, 13525365, 14427056, 15457560, 18033820, 21640584, 27050730, 30915120, 36067640, 43281168, 54101460, 72135280, 108202920, 216405840]

約数ペア:

[(1, 216405840), (2, 108202920), (3, 72135280), (4, 54101460), (5, 43281168), (6, 36067640), (7, 30915120), (8, 27050730), (10, 21640584), (12, 18033820), (14, 15457560), (15, 14427056), (16, 13525365), (20, 10820292), (21, 10305040), (24, 9016910), (28, 7728780), (30, 7213528), (35, 6183024), (40, 5410146), (42, 5152520), (48, 4508455), (56, 3864390), (60, 3606764), (70, 3091512), (80, 2705073), (84, 2576260), (105, 2061008), (112, 1932195), (120, 1803382), (140, 1545756), (168, 1288130), (210, 1030504), (240, 901691), (280, 772878), (336, 644065), (420, 515252), (560, 386439), (840, 257626), (1680, 128813)]