999990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 2673216

約数和(自身を除く): 1673226

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 82, 90, 123, 205, 246, 271, 369, 410, 542, 615, 738, 813, 1230, 1355, 1626, 1845, 2439, 2710, 3690, 4065, 4878, 8130, 11111, 12195, 22222, 24390, 33333, 55555, 66666, 99999, 111110, 166665, 199998, 333330, 499995, 999990]

約数ペア:

[(1, 999990), (2, 499995), (3, 333330), (5, 199998), (6, 166665), (9, 111110), (10, 99999), (15, 66666), (18, 55555), (30, 33333), (41, 24390), (45, 22222), (82, 12195), (90, 11111), (123, 8130), (205, 4878), (246, 4065), (271, 3690), (369, 2710), (410, 2439), (542, 1845), (615, 1626), (738, 1355), (813, 1230)]