21666120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25793}}^1$

素因数の和:25814

約数の個数: 64

約数和(自身を含む): 74286720

約数和(自身を除く): 52620600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25793, 51586, 77379, 103172, 128965, 154758, 180551, 206344, 257930, 309516, 361102, 386895, 515860, 541653, 619032, 722204, 773790, 902755, 1031720, 1083306, 1444408, 1547580, 1805510, 2166612, 2708265, 3095160, 3611020, 4333224, 5416530, 7222040, 10833060, 21666120]

約数ペア:

[(1, 21666120), (2, 10833060), (3, 7222040), (4, 5416530), (5, 4333224), (6, 3611020), (7, 3095160), (8, 2708265), (10, 2166612), (12, 1805510), (14, 1547580), (15, 1444408), (20, 1083306), (21, 1031720), (24, 902755), (28, 773790), (30, 722204), (35, 619032), (40, 541653), (42, 515860), (56, 386895), (60, 361102), (70, 309516), (84, 257930), (105, 206344), (120, 180551), (140, 154758), (168, 128965), (210, 103172), (280, 77379), (420, 51586), (840, 25793)]