20320215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:152

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 16451625

約数列:

[1, 3, 5, 15, 19, 37, 41, 47, 57, 95, 111, 123, 141, 185, 205, 235, 285, 555, 615, 703, 705, 779, 893, 1517, 1739, 1927, 2109, 2337, 2679, 3515, 3895, 4465, 4551, 5217, 5781, 7585, 8695, 9635, 10545, 11685, 13395, 22755, 26085, 28823, 28905, 33041, 36613, 71299, 86469, 99123, 109839, 144115, 165205, 183065, 213897, 356495, 432345, 495615, 549195, 1069485, 1354681, 4064043, 6773405, 20320215]

約数ペア:

[(1, 20320215), (3, 6773405), (5, 4064043), (15, 1354681), (19, 1069485), (37, 549195), (41, 495615), (47, 432345), (57, 356495), (95, 213897), (111, 183065), (123, 165205), (141, 144115), (185, 109839), (205, 99123), (235, 86469), (285, 71299), (555, 36613), (615, 33041), (703, 28905), (705, 28823), (779, 26085), (893, 22755), (1517, 13395), (1739, 11685), (1927, 10545), (2109, 9635), (2337, 8695), (2679, 7585), (3515, 5781), (3895, 5217), (4465, 4551)]