20657940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18121}}^1$

素因数の和:18152

約数の個数: 48

約数和(自身を含む): 60889920

約数和(自身を除く): 40231980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18121, 36242, 54363, 72484, 90605, 108726, 181210, 217452, 271815, 344299, 362420, 543630, 688598, 1032897, 1087260, 1377196, 1721495, 2065794, 3442990, 4131588, 5164485, 6885980, 10328970, 20657940]

約数ペア:

[(1, 20657940), (2, 10328970), (3, 6885980), (4, 5164485), (5, 4131588), (6, 3442990), (10, 2065794), (12, 1721495), (15, 1377196), (19, 1087260), (20, 1032897), (30, 688598), (38, 543630), (57, 362420), (60, 344299), (76, 271815), (95, 217452), (114, 181210), (190, 108726), (228, 90605), (285, 72484), (380, 54363), (570, 36242), (1140, 18121)]