215586813

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{419}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 316108800

約数和(自身を除く): 100521987

約数列:

[1, 3, 13, 39, 79, 167, 237, 419, 501, 1027, 1257, 2171, 3081, 5447, 6513, 13193, 16341, 33101, 39579, 69973, 99303, 171509, 209919, 430313, 514527, 909649, 1290939, 2728947, 5527867, 16583601, 71862271, 215586813]

約数ペア:

[(1, 215586813), (3, 71862271), (13, 16583601), (39, 5527867), (79, 2728947), (167, 1290939), (237, 909649), (419, 514527), (501, 430313), (1027, 209919), (1257, 171509), (2171, 99303), (3081, 69973), (5447, 39579), (6513, 33101), (13193, 16341)]