1781178147

素因数分解:

$3^3\times 7^1\times {\mathrm{461}}^1\times {\mathrm{20443}}^1$

素因数の和:20920

約数の個数: 32

約数和(自身を含む): 3022440960

約数和(自身を除く): 1241262813

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 461, 1383, 3227, 4149, 9681, 12447, 20443, 29043, 61329, 87129, 143101, 183987, 429303, 551961, 1287909, 3863727, 9424223, 28272669, 65969561, 84818007, 197908683, 254454021, 593726049, 1781178147]

約数ペア:

[(1, 1781178147), (3, 593726049), (7, 254454021), (9, 197908683), (21, 84818007), (27, 65969561), (63, 28272669), (189, 9424223), (461, 3863727), (1383, 1287909), (3227, 551961), (4149, 429303), (9681, 183987), (12447, 143101), (20443, 87129), (29043, 61329)]