20071725

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 34997760

約数和(自身を除く): 14926035

約数列:

[1, 3, 5, 15, 25, 31, 75, 89, 93, 97, 155, 267, 291, 445, 465, 485, 775, 1335, 1455, 2225, 2325, 2425, 2759, 3007, 6675, 7275, 8277, 8633, 9021, 13795, 15035, 25899, 41385, 43165, 45105, 68975, 75175, 129495, 206925, 215825, 225525, 267623, 647475, 802869, 1338115, 4014345, 6690575, 20071725]

約数ペア:

[(1, 20071725), (3, 6690575), (5, 4014345), (15, 1338115), (25, 802869), (31, 647475), (75, 267623), (89, 225525), (93, 215825), (97, 206925), (155, 129495), (267, 75175), (291, 68975), (445, 45105), (465, 43165), (485, 41385), (775, 25899), (1335, 15035), (1455, 13795), (2225, 9021), (2325, 8633), (2425, 8277), (2759, 7275), (3007, 6675)]