21724011

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 15600789

約数列:

[1, 3, 9, 17, 19, 27, 47, 51, 53, 57, 141, 153, 159, 171, 323, 423, 459, 477, 513, 799, 893, 901, 969, 1007, 1269, 1431, 2397, 2491, 2679, 2703, 2907, 3021, 7191, 7473, 8037, 8109, 8721, 9063, 15181, 17119, 21573, 22419, 24111, 24327, 27189, 42347, 45543, 47329, 51357, 67257, 127041, 136629, 141987, 154071, 381123, 409887, 425961, 462213, 804593, 1143369, 1277883, 2413779, 7241337, 21724011]

約数ペア:

[(1, 21724011), (3, 7241337), (9, 2413779), (17, 1277883), (19, 1143369), (27, 804593), (47, 462213), (51, 425961), (53, 409887), (57, 381123), (141, 154071), (153, 141987), (159, 136629), (171, 127041), (323, 67257), (423, 51357), (459, 47329), (477, 45543), (513, 42347), (799, 27189), (893, 24327), (901, 24111), (969, 22419), (1007, 21573), (1269, 17119), (1431, 15181), (2397, 9063), (2491, 8721), (2679, 8109), (2703, 8037), (2907, 7473), (3021, 7191)]