21688170

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{743}}^1$

素因数の和:899

約数の個数: 64

約数和(自身を含む): 59996160

約数和(自身を除く): 38307990

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 139, 210, 278, 417, 695, 743, 834, 973, 1390, 1486, 1946, 2085, 2229, 2919, 3715, 4170, 4458, 4865, 5201, 5838, 7430, 9730, 10402, 11145, 14595, 15603, 22290, 26005, 29190, 31206, 52010, 78015, 103277, 156030, 206554, 309831, 516385, 619662, 722939, 1032770, 1445878, 1549155, 2168817, 3098310, 3614695, 4337634, 7229390, 10844085, 21688170]

約数ペア:

[(1, 21688170), (2, 10844085), (3, 7229390), (5, 4337634), (6, 3614695), (7, 3098310), (10, 2168817), (14, 1549155), (15, 1445878), (21, 1032770), (30, 722939), (35, 619662), (42, 516385), (70, 309831), (105, 206554), (139, 156030), (210, 103277), (278, 78015), (417, 52010), (695, 31206), (743, 29190), (834, 26005), (973, 22290), (1390, 15603), (1486, 14595), (1946, 11145), (2085, 10402), (2229, 9730), (2919, 7430), (3715, 5838), (4170, 5201), (4458, 4865)]