28696941

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{947}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 52450944

約数和(自身を除く): 23754003

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 777, 819, 947, 1443, 2331, 2841, 3367, 4329, 6629, 8523, 10101, 12311, 19887, 30303, 35039, 36933, 59661, 86177, 105117, 110799, 245273, 258531, 315351, 455507, 735819, 775593, 1366521, 2207457, 3188549, 4099563, 9565647, 28696941]

約数ペア:

[(1, 28696941), (3, 9565647), (7, 4099563), (9, 3188549), (13, 2207457), (21, 1366521), (37, 775593), (39, 735819), (63, 455507), (91, 315351), (111, 258531), (117, 245273), (259, 110799), (273, 105117), (333, 86177), (481, 59661), (777, 36933), (819, 35039), (947, 30303), (1443, 19887), (2331, 12311), (2841, 10101), (3367, 8523), (4329, 6629)]