21686475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 38649312

約数和(自身を除く): 16962837

約数列:

[1, 3, 5, 15, 17, 25, 51, 73, 75, 85, 219, 233, 255, 365, 425, 699, 1095, 1165, 1241, 1275, 1825, 3495, 3723, 3961, 5475, 5825, 6205, 11883, 17009, 17475, 18615, 19805, 31025, 51027, 59415, 85045, 93075, 99025, 255135, 289153, 297075, 425225, 867459, 1275675, 1445765, 4337295, 7228825, 21686475]

約数ペア:

[(1, 21686475), (3, 7228825), (5, 4337295), (15, 1445765), (17, 1275675), (25, 867459), (51, 425225), (73, 297075), (75, 289153), (85, 255135), (219, 99025), (233, 93075), (255, 85045), (365, 59415), (425, 51027), (699, 31025), (1095, 19805), (1165, 18615), (1241, 17475), (1275, 17009), (1825, 11883), (3495, 6205), (3723, 5825), (3961, 5475)]