21534780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{947}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 60520320

約数和(自身を除く): 38985540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 379, 758, 947, 1137, 1516, 1894, 1895, 2274, 2841, 3788, 3790, 4548, 4735, 5682, 5685, 7580, 9470, 11364, 11370, 14205, 18940, 22740, 28410, 56820, 358913, 717826, 1076739, 1435652, 1794565, 2153478, 3589130, 4306956, 5383695, 7178260, 10767390, 21534780]

約数ペア:

[(1, 21534780), (2, 10767390), (3, 7178260), (4, 5383695), (5, 4306956), (6, 3589130), (10, 2153478), (12, 1794565), (15, 1435652), (20, 1076739), (30, 717826), (60, 358913), (379, 56820), (758, 28410), (947, 22740), (1137, 18940), (1516, 14205), (1894, 11370), (1895, 11364), (2274, 9470), (2841, 7580), (3788, 5685), (3790, 5682), (4548, 4735)]