21396055

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:195

約数の個数: 32

約数和(自身を含む): 28123200

約数和(自身を除く): 6727145

約数列:

[1, 5, 29, 41, 59, 61, 145, 205, 295, 305, 1189, 1711, 1769, 2419, 2501, 3599, 5945, 8555, 8845, 12095, 12505, 17995, 70151, 72529, 104371, 147559, 350755, 362645, 521855, 737795, 4279211, 21396055]

約数ペア:

[(1, 21396055), (5, 4279211), (29, 737795), (41, 521855), (59, 362645), (61, 350755), (145, 147559), (205, 104371), (295, 72529), (305, 70151), (1189, 17995), (1711, 12505), (1769, 12095), (2419, 8845), (2501, 8555), (3599, 5945)]