654390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:685

約数の個数: 48

約数和(自身を含む): 1858896

約数和(自身を除く): 1204506

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 661, 990, 1322, 1983, 3305, 3966, 5949, 6610, 7271, 9915, 11898, 14542, 19830, 21813, 29745, 36355, 43626, 59490, 65439, 72710, 109065, 130878, 218130, 327195, 654390]

約数ペア:

[(1, 654390), (2, 327195), (3, 218130), (5, 130878), (6, 109065), (9, 72710), (10, 65439), (11, 59490), (15, 43626), (18, 36355), (22, 29745), (30, 21813), (33, 19830), (45, 14542), (55, 11898), (66, 9915), (90, 7271), (99, 6610), (110, 5949), (165, 3966), (198, 3305), (330, 1983), (495, 1322), (661, 990)]