21018525

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{349}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 38539200

約数和(自身を除く): 17520675

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 73, 75, 165, 219, 275, 349, 365, 803, 825, 1047, 1095, 1745, 1825, 2409, 3839, 4015, 5235, 5475, 8725, 11517, 12045, 19195, 20075, 25477, 26175, 57585, 60225, 76431, 95975, 127385, 280247, 287925, 382155, 636925, 840741, 1401235, 1910775, 4203705, 7006175, 21018525]

約数ペア:

[(1, 21018525), (3, 7006175), (5, 4203705), (11, 1910775), (15, 1401235), (25, 840741), (33, 636925), (55, 382155), (73, 287925), (75, 280247), (165, 127385), (219, 95975), (275, 76431), (349, 60225), (365, 57585), (803, 26175), (825, 25477), (1047, 20075), (1095, 19195), (1745, 12045), (1825, 11517), (2409, 8725), (3839, 5475), (4015, 5235)]