19818458

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 33784128

約数和(自身を除く): 13965670

約数列:

[1, 2, 11, 22, 37, 74, 97, 194, 251, 407, 502, 814, 1067, 2134, 2761, 3589, 5522, 7178, 9287, 18574, 24347, 39479, 48694, 78958, 102157, 204314, 267817, 535634, 900839, 1801678, 9909229, 19818458]

約数ペア:

[(1, 19818458), (2, 9909229), (11, 1801678), (22, 900839), (37, 535634), (74, 267817), (97, 204314), (194, 102157), (251, 78958), (407, 48694), (502, 39479), (814, 24347), (1067, 18574), (2134, 9287), (2761, 7178), (3589, 5522)]