20536725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 39053056

約数和(自身を除く): 18516331

約数列:

[1, 3, 5, 11, 15, 25, 31, 33, 55, 73, 75, 93, 121, 155, 165, 219, 275, 341, 363, 365, 465, 605, 775, 803, 825, 1023, 1095, 1705, 1815, 1825, 2263, 2325, 2409, 3025, 3751, 4015, 5115, 5475, 6789, 8525, 8833, 9075, 11253, 11315, 12045, 18755, 20075, 24893, 25575, 26499, 33945, 44165, 56265, 56575, 60225, 74679, 93775, 124465, 132495, 169725, 220825, 273823, 281325, 373395, 622325, 662475, 821469, 1369115, 1866975, 4107345, 6845575, 20536725]

約数ペア:

[(1, 20536725), (3, 6845575), (5, 4107345), (11, 1866975), (15, 1369115), (25, 821469), (31, 662475), (33, 622325), (55, 373395), (73, 281325), (75, 273823), (93, 220825), (121, 169725), (155, 132495), (165, 124465), (219, 93775), (275, 74679), (341, 60225), (363, 56575), (365, 56265), (465, 44165), (605, 33945), (775, 26499), (803, 25575), (825, 24893), (1023, 20075), (1095, 18755), (1705, 12045), (1815, 11315), (1825, 11253), (2263, 9075), (2325, 8833), (2409, 8525), (3025, 6789), (3751, 5475), (4015, 5115)]