201720351

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 338549760

約数和(自身を除く): 136829409

約数列:

[1, 3, 7, 17, 21, 51, 59, 61, 119, 157, 177, 183, 357, 413, 427, 471, 1003, 1037, 1099, 1239, 1281, 2669, 3009, 3111, 3297, 3599, 7021, 7259, 8007, 9263, 9577, 10797, 18683, 21063, 21777, 25193, 27789, 28731, 56049, 61183, 64841, 67039, 75579, 157471, 162809, 183549, 194523, 201117, 428281, 472413, 488427, 565043, 1102297, 1139663, 1284843, 1695129, 3306891, 3418989, 3955301, 9605731, 11865903, 28817193, 67240117, 201720351]

約数ペア:

[(1, 201720351), (3, 67240117), (7, 28817193), (17, 11865903), (21, 9605731), (51, 3955301), (59, 3418989), (61, 3306891), (119, 1695129), (157, 1284843), (177, 1139663), (183, 1102297), (357, 565043), (413, 488427), (427, 472413), (471, 428281), (1003, 201117), (1037, 194523), (1099, 183549), (1239, 162809), (1281, 157471), (2669, 75579), (3009, 67039), (3111, 64841), (3297, 61183), (3599, 56049), (7021, 28731), (7259, 27789), (8007, 25193), (9263, 21777), (9577, 21063), (10797, 18683)]