20291229

素因数分解:

$3^5\times 7^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 35409920

約数和(自身を除く): 15118691

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 81, 151, 189, 237, 243, 453, 553, 567, 711, 1057, 1359, 1659, 1701, 2133, 3171, 4077, 4977, 6399, 9513, 11929, 12231, 14931, 19197, 28539, 35787, 36693, 44793, 83503, 85617, 107361, 134379, 250509, 256851, 322083, 751527, 966249, 2254581, 2898747, 6763743, 20291229]

約数ペア:

[(1, 20291229), (3, 6763743), (7, 2898747), (9, 2254581), (21, 966249), (27, 751527), (63, 322083), (79, 256851), (81, 250509), (151, 134379), (189, 107361), (237, 85617), (243, 83503), (453, 44793), (553, 36693), (567, 35787), (711, 28539), (1057, 19197), (1359, 14931), (1659, 12231), (1701, 11929), (2133, 9513), (3171, 6399), (4077, 4977)]