21647985

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 35890560

約数和(自身を除く): 14242575

約数列:

[1, 3, 5, 15, 59, 61, 177, 183, 295, 305, 401, 885, 915, 1203, 2005, 3599, 6015, 10797, 17995, 23659, 24461, 53985, 70977, 73383, 118295, 122305, 354885, 366915, 1443199, 4329597, 7215995, 21647985]

約数ペア:

[(1, 21647985), (3, 7215995), (5, 4329597), (15, 1443199), (59, 366915), (61, 354885), (177, 122305), (183, 118295), (295, 73383), (305, 70977), (401, 53985), (885, 24461), (915, 23659), (1203, 17995), (2005, 10797), (3599, 6015)]