19954725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 38092800

約数和(自身を除く): 18138075

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 191, 199, 525, 573, 597, 955, 995, 1337, 1393, 2865, 2985, 4011, 4179, 4775, 4975, 6685, 6965, 14325, 14925, 20055, 20895, 33425, 34825, 38009, 100275, 104475, 114027, 190045, 266063, 570135, 798189, 950225, 1330315, 2850675, 3990945, 6651575, 19954725]

約数ペア:

[(1, 19954725), (3, 6651575), (5, 3990945), (7, 2850675), (15, 1330315), (21, 950225), (25, 798189), (35, 570135), (75, 266063), (105, 190045), (175, 114027), (191, 104475), (199, 100275), (525, 38009), (573, 34825), (597, 33425), (955, 20895), (995, 20055), (1337, 14925), (1393, 14325), (2865, 6965), (2985, 6685), (4011, 4975), (4179, 4775)]