21000969825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1259}}^1\times {\mathrm{20219}}^1$

素因数の和:21502

約数の個数: 48

約数和(自身を含む): 37910073600

約数和(自身を除く): 16909103775

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 1259, 3777, 6295, 13849, 18885, 20219, 31475, 41547, 60657, 69245, 94425, 101095, 207735, 222409, 303285, 346225, 505475, 667227, 1038675, 1112045, 1516425, 3336135, 5560225, 16680675, 25455721, 76367163, 127278605, 280012931, 381835815, 636393025, 840038793, 1400064655, 1909179075, 4200193965, 7000323275, 21000969825]

約数ペア:

[(1, 21000969825), (3, 7000323275), (5, 4200193965), (11, 1909179075), (15, 1400064655), (25, 840038793), (33, 636393025), (55, 381835815), (75, 280012931), (165, 127278605), (275, 76367163), (825, 25455721), (1259, 16680675), (3777, 5560225), (6295, 3336135), (13849, 1516425), (18885, 1112045), (20219, 1038675), (31475, 667227), (41547, 505475), (60657, 346225), (69245, 303285), (94425, 222409), (101095, 207735)]