649215

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{229}}^1$

素因数の和:253

約数の個数: 40

約数和(自身を含む): 1335840

約数和(自身を除く): 686625

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 229, 315, 405, 567, 687, 945, 1145, 1603, 2061, 2835, 3435, 4809, 6183, 8015, 10305, 14427, 18549, 24045, 30915, 43281, 72135, 92745, 129843, 216405, 649215]

約数ペア:

[(1, 649215), (3, 216405), (5, 129843), (7, 92745), (9, 72135), (15, 43281), (21, 30915), (27, 24045), (35, 18549), (45, 14427), (63, 10305), (81, 8015), (105, 6183), (135, 4809), (189, 3435), (229, 2835), (315, 2061), (405, 1603), (567, 1145), (687, 945)]