20015175

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 35497728

約数和(自身を除く): 15482553

約数列:

[1, 3, 5, 15, 23, 25, 41, 69, 75, 115, 123, 205, 283, 345, 575, 615, 849, 943, 1025, 1415, 1725, 2829, 3075, 4245, 4715, 6509, 7075, 11603, 14145, 19527, 21225, 23575, 32545, 34809, 58015, 70725, 97635, 162725, 174045, 266869, 290075, 488175, 800607, 870225, 1334345, 4003035, 6671725, 20015175]

約数ペア:

[(1, 20015175), (3, 6671725), (5, 4003035), (15, 1334345), (23, 870225), (25, 800607), (41, 488175), (69, 290075), (75, 266869), (115, 174045), (123, 162725), (205, 97635), (283, 70725), (345, 58015), (575, 34809), (615, 32545), (849, 23575), (943, 21225), (1025, 19527), (1415, 14145), (1725, 11603), (2829, 7075), (3075, 6509), (4245, 4715)]