19996485

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 32959872

約数和(自身を除く): 12963387

約数列:

[1, 3, 5, 15, 67, 101, 197, 201, 303, 335, 505, 591, 985, 1005, 1515, 2955, 6767, 13199, 19897, 20301, 33835, 39597, 59691, 65995, 99485, 101505, 197985, 298455, 1333099, 3999297, 6665495, 19996485]

約数ペア:

[(1, 19996485), (3, 6665495), (5, 3999297), (15, 1333099), (67, 298455), (101, 197985), (197, 101505), (201, 99485), (303, 65995), (335, 59691), (505, 39597), (591, 33835), (985, 20301), (1005, 19897), (1515, 13199), (2955, 6767)]