21281820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50671}}^1$

素因数の和:50690

約数の個数: 48

約数和(自身を含む): 68103168

約数和(自身を除く): 46821348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50671, 101342, 152013, 202684, 253355, 304026, 354697, 506710, 608052, 709394, 760065, 1013420, 1064091, 1418788, 1520130, 1773485, 2128182, 3040260, 3546970, 4256364, 5320455, 7093940, 10640910, 21281820]

約数ペア:

[(1, 21281820), (2, 10640910), (3, 7093940), (4, 5320455), (5, 4256364), (6, 3546970), (7, 3040260), (10, 2128182), (12, 1773485), (14, 1520130), (15, 1418788), (20, 1064091), (21, 1013420), (28, 760065), (30, 709394), (35, 608052), (42, 506710), (60, 354697), (70, 304026), (84, 253355), (105, 202684), (140, 152013), (210, 101342), (420, 50671)]