397392345

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{420521}}^1$

素因数の和:420542

約数の個数: 32

約数和(自身を含む): 807402240

約数和(自身を除く): 410009895

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 420521, 1261563, 2102605, 2943647, 3784689, 6307815, 8830941, 11354067, 14718235, 18923445, 26492823, 44154705, 56770335, 79478469, 132464115, 397392345]

約数ペア:

[(1, 397392345), (3, 132464115), (5, 79478469), (7, 56770335), (9, 44154705), (15, 26492823), (21, 18923445), (27, 14718235), (35, 11354067), (45, 8830941), (63, 6307815), (105, 3784689), (135, 2943647), (189, 2102605), (315, 1261563), (945, 420521)]