16660540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 38031840

約数和(自身を除く): 21371300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 461, 556, 695, 922, 1390, 1807, 1844, 2305, 2780, 3614, 4610, 5993, 7228, 9035, 9220, 11986, 18070, 23972, 29965, 36140, 59930, 64079, 119860, 128158, 256316, 320395, 640790, 833027, 1281580, 1666054, 3332108, 4165135, 8330270, 16660540]

約数ペア:

[(1, 16660540), (2, 8330270), (4, 4165135), (5, 3332108), (10, 1666054), (13, 1281580), (20, 833027), (26, 640790), (52, 320395), (65, 256316), (130, 128158), (139, 119860), (260, 64079), (278, 59930), (461, 36140), (556, 29965), (695, 23972), (922, 18070), (1390, 11986), (1807, 9220), (1844, 9035), (2305, 7228), (2780, 5993), (3614, 4610)]