399394515

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{571}}^1$

素因数の和:820

約数の個数: 64

約数和(自身を含む): 733404672

約数和(自身を除く): 334010157

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 211, 221, 255, 571, 633, 663, 1055, 1105, 1713, 2743, 2855, 3165, 3315, 3587, 7423, 8229, 8565, 9707, 10761, 13715, 17935, 22269, 29121, 37115, 41145, 46631, 48535, 53805, 111345, 120481, 126191, 139893, 145605, 233155, 361443, 378573, 602405, 630955, 699465, 1566253, 1807215, 1892865, 2048177, 4698759, 6144531, 7831265, 10240885, 23493795, 26626301, 30722655, 79878903, 133131505, 399394515]

約数ペア:

[(1, 399394515), (3, 133131505), (5, 79878903), (13, 30722655), (15, 26626301), (17, 23493795), (39, 10240885), (51, 7831265), (65, 6144531), (85, 4698759), (195, 2048177), (211, 1892865), (221, 1807215), (255, 1566253), (571, 699465), (633, 630955), (663, 602405), (1055, 378573), (1105, 361443), (1713, 233155), (2743, 145605), (2855, 139893), (3165, 126191), (3315, 120481), (3587, 111345), (7423, 53805), (8229, 48535), (8565, 46631), (9707, 41145), (10761, 37115), (13715, 29121), (17935, 22269)]