20399190

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{13877}}^1$

素因数の和:13901

約数の個数: 48

約数和(自身を含む): 56955312

約数和(自身を除く): 36556122

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 13877, 27754, 41631, 69385, 83262, 97139, 138770, 194278, 208155, 291417, 416310, 485695, 582834, 679973, 971390, 1359946, 1457085, 2039919, 2914170, 3399865, 4079838, 6799730, 10199595, 20399190]

約数ペア:

[(1, 20399190), (2, 10199595), (3, 6799730), (5, 4079838), (6, 3399865), (7, 2914170), (10, 2039919), (14, 1457085), (15, 1359946), (21, 971390), (30, 679973), (35, 582834), (42, 485695), (49, 416310), (70, 291417), (98, 208155), (105, 194278), (147, 138770), (210, 97139), (245, 83262), (294, 69385), (490, 41631), (735, 27754), (1470, 13877)]