21602525

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 33033600

約数和(自身を除く): 11431075

約数列:

[1, 5, 7, 19, 25, 35, 73, 89, 95, 133, 175, 365, 445, 475, 511, 623, 665, 1387, 1691, 1825, 2225, 2555, 3115, 3325, 6497, 6935, 8455, 9709, 11837, 12775, 15575, 32485, 34675, 42275, 45479, 48545, 59185, 123443, 162425, 227395, 242725, 295925, 617215, 864101, 1136975, 3086075, 4320505, 21602525]

約数ペア:

[(1, 21602525), (5, 4320505), (7, 3086075), (19, 1136975), (25, 864101), (35, 617215), (73, 295925), (89, 242725), (95, 227395), (133, 162425), (175, 123443), (365, 59185), (445, 48545), (475, 45479), (511, 42275), (623, 34675), (665, 32485), (1387, 15575), (1691, 12775), (1825, 11837), (2225, 9709), (2555, 8455), (3115, 6935), (3325, 6497)]