20722425

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 36747648

約数和(自身を除く): 16025223

約数列:

[1, 3, 5, 15, 23, 25, 41, 69, 75, 115, 123, 205, 293, 345, 575, 615, 879, 943, 1025, 1465, 1725, 2829, 3075, 4395, 4715, 6739, 7325, 12013, 14145, 20217, 21975, 23575, 33695, 36039, 60065, 70725, 101085, 168475, 180195, 276299, 300325, 505425, 828897, 900975, 1381495, 4144485, 6907475, 20722425]

約数ペア:

[(1, 20722425), (3, 6907475), (5, 4144485), (15, 1381495), (23, 900975), (25, 828897), (41, 505425), (69, 300325), (75, 276299), (115, 180195), (123, 168475), (205, 101085), (293, 70725), (345, 60065), (575, 36039), (615, 33695), (879, 23575), (943, 21975), (1025, 20217), (1465, 14145), (1725, 12013), (2829, 7325), (3075, 6739), (4395, 4715)]