16978260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21767}}^1$

素因数の和:21792

約数の個数: 48

約数和(自身を含む): 51198336

約数和(自身を除く): 34220076

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 21767, 43534, 65301, 87068, 108835, 130602, 217670, 261204, 282971, 326505, 435340, 565942, 653010, 848913, 1131884, 1306020, 1414855, 1697826, 2829710, 3395652, 4244565, 5659420, 8489130, 16978260]

約数ペア:

[(1, 16978260), (2, 8489130), (3, 5659420), (4, 4244565), (5, 3395652), (6, 2829710), (10, 1697826), (12, 1414855), (13, 1306020), (15, 1131884), (20, 848913), (26, 653010), (30, 565942), (39, 435340), (52, 326505), (60, 282971), (65, 261204), (78, 217670), (130, 130602), (156, 108835), (195, 87068), (260, 65301), (390, 43534), (780, 21767)]