18956728

素因数分解:

$2^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1307}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 42496920

約数和(自身を除く): 23540192

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 49, 56, 74, 98, 148, 196, 259, 296, 392, 518, 1036, 1307, 1813, 2072, 2614, 3626, 5228, 7252, 9149, 10456, 14504, 18298, 36596, 48359, 64043, 73192, 96718, 128086, 193436, 256172, 338513, 386872, 512344, 677026, 1354052, 2369591, 2708104, 4739182, 9478364, 18956728]

約数ペア:

[(1, 18956728), (2, 9478364), (4, 4739182), (7, 2708104), (8, 2369591), (14, 1354052), (28, 677026), (37, 512344), (49, 386872), (56, 338513), (74, 256172), (98, 193436), (148, 128086), (196, 96718), (259, 73192), (296, 64043), (392, 48359), (518, 36596), (1036, 18298), (1307, 14504), (1813, 10456), (2072, 9149), (2614, 7252), (3626, 5228)]