20872215

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1699}}^1$

素因数の和:1733

約数の個数: 64

約数和(自身を含む): 45696000

約数和(自身を除く): 24823785

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1699, 1755, 2457, 4095, 5097, 8495, 11893, 12285, 15291, 22087, 25485, 35679, 45873, 59465, 66261, 76455, 107037, 110435, 154609, 178395, 198783, 229365, 321111, 331305, 463827, 535185, 596349, 773045, 993915, 1391481, 1605555, 2319135, 2981745, 4174443, 6957405, 20872215]

約数ペア:

[(1, 20872215), (3, 6957405), (5, 4174443), (7, 2981745), (9, 2319135), (13, 1605555), (15, 1391481), (21, 993915), (27, 773045), (35, 596349), (39, 535185), (45, 463827), (63, 331305), (65, 321111), (91, 229365), (105, 198783), (117, 178395), (135, 154609), (189, 110435), (195, 107037), (273, 76455), (315, 66261), (351, 59465), (455, 45873), (585, 35679), (819, 25485), (945, 22087), (1365, 15291), (1699, 12285), (1755, 11893), (2457, 8495), (4095, 5097)]