8640345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 17141760

約数和(自身を除く): 8501415

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 61, 71, 95, 105, 133, 183, 213, 285, 305, 355, 399, 427, 497, 665, 915, 1065, 1159, 1281, 1349, 1491, 1995, 2135, 2485, 3477, 4047, 4331, 5795, 6405, 6745, 7455, 8113, 9443, 12993, 17385, 20235, 21655, 24339, 28329, 30317, 40565, 47215, 64965, 82289, 90951, 121695, 141645, 151585, 246867, 411445, 454755, 576023, 1234335, 1728069, 2880115, 8640345]

約数ペア:

[(1, 8640345), (3, 2880115), (5, 1728069), (7, 1234335), (15, 576023), (19, 454755), (21, 411445), (35, 246867), (57, 151585), (61, 141645), (71, 121695), (95, 90951), (105, 82289), (133, 64965), (183, 47215), (213, 40565), (285, 30317), (305, 28329), (355, 24339), (399, 21655), (427, 20235), (497, 17385), (665, 12993), (915, 9443), (1065, 8113), (1159, 7455), (1281, 6745), (1349, 6405), (1491, 5795), (1995, 4331), (2135, 4047), (2485, 3477)]