18756003

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 29767680

約数和(自身を除く): 11011677

約数列:

[1, 3, 7, 21, 37, 101, 111, 239, 259, 303, 707, 717, 777, 1673, 2121, 3737, 5019, 8843, 11211, 24139, 26159, 26529, 61901, 72417, 78477, 168973, 185703, 506919, 893143, 2679429, 6252001, 18756003]

約数ペア:

[(1, 18756003), (3, 6252001), (7, 2679429), (21, 893143), (37, 506919), (101, 185703), (111, 168973), (239, 78477), (259, 72417), (303, 61901), (707, 26529), (717, 26159), (777, 24139), (1673, 11211), (2121, 8843), (3737, 5019)]