18958472

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{433}}^1$

素因数の和:873

約数の個数: 32

約数和(自身を含む): 38461080

約数和(自身を除く): 19502608

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 421, 433, 842, 866, 1684, 1732, 3368, 3464, 5473, 5629, 10946, 11258, 21892, 22516, 43784, 45032, 182293, 364586, 729172, 1458344, 2369809, 4739618, 9479236, 18958472]

約数ペア:

[(1, 18958472), (2, 9479236), (4, 4739618), (8, 2369809), (13, 1458344), (26, 729172), (52, 364586), (104, 182293), (421, 45032), (433, 43784), (842, 22516), (866, 21892), (1684, 11258), (1732, 10946), (3368, 5629), (3464, 5473)]