21869523

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 35957376

約数和(自身を除く): 14087853

約数列:

[1, 3, 9, 13, 39, 41, 47, 97, 117, 123, 141, 291, 369, 423, 533, 611, 873, 1261, 1599, 1833, 1927, 3783, 3977, 4559, 4797, 5499, 5781, 11349, 11931, 13677, 17343, 25051, 35793, 41031, 51701, 59267, 75153, 155103, 177801, 186919, 225459, 465309, 533403, 560757, 1682271, 2429947, 7289841, 21869523]

約数ペア:

[(1, 21869523), (3, 7289841), (9, 2429947), (13, 1682271), (39, 560757), (41, 533403), (47, 465309), (97, 225459), (117, 186919), (123, 177801), (141, 155103), (291, 75153), (369, 59267), (423, 51701), (533, 41031), (611, 35793), (873, 25051), (1261, 17343), (1599, 13677), (1833, 11931), (1927, 11349), (3783, 5781), (3977, 5499), (4559, 4797)]