21138473785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1699}}^1\times {\mathrm{17401}}^1$

素因数の和:19129

約数の個数: 32

約数和(自身を含む): 29820067200

約数和(自身を除く): 8681593415

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 1699, 8495, 17401, 18689, 22087, 87005, 93445, 110435, 191411, 226213, 242957, 957055, 1131065, 1214785, 2488343, 12441715, 29564299, 147821495, 325207289, 384335887, 1626036445, 1921679435, 4227694757, 21138473785]

約数ペア:

[(1, 21138473785), (5, 4227694757), (11, 1921679435), (13, 1626036445), (55, 384335887), (65, 325207289), (143, 147821495), (715, 29564299), (1699, 12441715), (8495, 2488343), (17401, 1214785), (18689, 1131065), (22087, 957055), (87005, 242957), (93445, 226213), (110435, 191411)]