21708540

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5743}}^1$

素因数の和:5768

約数の個数: 96

約数和(自身を含む): 77199360

約数和(自身を除く): 55490820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5743, 11486, 17229, 22972, 28715, 34458, 40201, 51687, 57430, 68916, 80402, 86145, 103374, 114860, 120603, 155061, 160804, 172290, 201005, 206748, 241206, 258435, 310122, 344580, 361809, 402010, 482412, 516870, 603015, 620244, 723618, 775305, 804020, 1033740, 1085427, 1206030, 1447236, 1550610, 1809045, 2170854, 2412060, 3101220, 3618090, 4341708, 5427135, 7236180, 10854270, 21708540]

約数ペア:

[(1, 21708540), (2, 10854270), (3, 7236180), (4, 5427135), (5, 4341708), (6, 3618090), (7, 3101220), (9, 2412060), (10, 2170854), (12, 1809045), (14, 1550610), (15, 1447236), (18, 1206030), (20, 1085427), (21, 1033740), (27, 804020), (28, 775305), (30, 723618), (35, 620244), (36, 603015), (42, 516870), (45, 482412), (54, 402010), (60, 361809), (63, 344580), (70, 310122), (84, 258435), (90, 241206), (105, 206748), (108, 201005), (126, 172290), (135, 160804), (140, 155061), (180, 120603), (189, 114860), (210, 103374), (252, 86145), (270, 80402), (315, 68916), (378, 57430), (420, 51687), (540, 40201), (630, 34458), (756, 28715), (945, 22972), (1260, 17229), (1890, 11486), (3780, 5743)]