20961369

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 37497600

約数和(自身を除く): 16536231

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 61, 89, 99, 117, 143, 183, 267, 297, 351, 429, 549, 671, 793, 801, 979, 1157, 1287, 1647, 2013, 2379, 2403, 2937, 3471, 3861, 5429, 6039, 7137, 8723, 8811, 10413, 12727, 16287, 18117, 21411, 26169, 26433, 31239, 38181, 48861, 59719, 70577, 78507, 114543, 146583, 179157, 211731, 235521, 343629, 537471, 635193, 776347, 1612413, 1905579, 2329041, 6987123, 20961369]

約数ペア:

[(1, 20961369), (3, 6987123), (9, 2329041), (11, 1905579), (13, 1612413), (27, 776347), (33, 635193), (39, 537471), (61, 343629), (89, 235521), (99, 211731), (117, 179157), (143, 146583), (183, 114543), (267, 78507), (297, 70577), (351, 59719), (429, 48861), (549, 38181), (671, 31239), (793, 26433), (801, 26169), (979, 21411), (1157, 18117), (1287, 16287), (1647, 12727), (2013, 10413), (2379, 8811), (2403, 8723), (2937, 7137), (3471, 6039), (3861, 5429)]