71572221

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1049}}^1$

素因数の和:1103

約数の個数: 48

約数和(自身を含む): 128016000

約数和(自身を除く): 56443779

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 361, 399, 513, 1049, 1083, 1197, 2527, 3147, 3249, 3591, 7343, 7581, 9441, 9747, 19931, 22029, 22743, 28323, 59793, 66087, 68229, 139517, 179379, 198261, 378689, 418551, 538137, 1136067, 1255653, 2650823, 3408201, 3766959, 7952469, 10224603, 23857407, 71572221]

約数ペア:

[(1, 71572221), (3, 23857407), (7, 10224603), (9, 7952469), (19, 3766959), (21, 3408201), (27, 2650823), (57, 1255653), (63, 1136067), (133, 538137), (171, 418551), (189, 378689), (361, 198261), (399, 179379), (513, 139517), (1049, 68229), (1083, 66087), (1197, 59793), (2527, 28323), (3147, 22743), (3249, 22029), (3591, 19931), (7343, 9747), (7581, 9441)]