20486940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17971}}^1$

素因数の和:18002

約数の個数: 48

約数和(自身を含む): 60385920

約数和(自身を除く): 39898980

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, 17971, 35942, 53913, 71884, 89855, 107826, 179710, 215652, 269565, 341449, 359420, 539130, 682898, 1024347, 1078260, 1365796, 1707245, 2048694, 3414490, 4097388, 5121735, 6828980, 10243470, 20486940]

約数ペア:

[(1, 20486940), (2, 10243470), (3, 6828980), (4, 5121735), (5, 4097388), (6, 3414490), (10, 2048694), (12, 1707245), (15, 1365796), (19, 1078260), (20, 1024347), (30, 682898), (38, 539130), (57, 359420), (60, 341449), (76, 269565), (95, 215652), (114, 179710), (190, 107826), (228, 89855), (285, 71884), (380, 53913), (570, 35942), (1140, 17971)]