9780781647

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{402551}}^1$

素因数の和:402663

約数の個数: 32

約数和(自身を含む): 16230896640

約数和(自身を除く): 6450114993

約数列:

[1, 3, 7, 13, 21, 39, 89, 91, 267, 273, 623, 1157, 1869, 3471, 8099, 24297, 402551, 1207653, 2817857, 5233163, 8453571, 15699489, 35827039, 36632141, 107481117, 109896423, 250789273, 465751507, 752367819, 1397254521, 3260260549, 9780781647]

約数ペア:

[(1, 9780781647), (3, 3260260549), (7, 1397254521), (13, 752367819), (21, 465751507), (39, 250789273), (89, 109896423), (91, 107481117), (267, 36632141), (273, 35827039), (623, 15699489), (1157, 8453571), (1869, 5233163), (3471, 2817857), (8099, 1207653), (24297, 402551)]