19902736

素因数分解:

$2^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2141}}^1$

素因数の和:2239

約数の個数: 40

約数和(自身を含む): 44622144

約数和(自身を除く): 24719408

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 83, 112, 166, 332, 581, 664, 1162, 1328, 2141, 2324, 4282, 4648, 8564, 9296, 14987, 17128, 29974, 34256, 59948, 119896, 177703, 239792, 355406, 710812, 1243921, 1421624, 2487842, 2843248, 4975684, 9951368, 19902736]

約数ペア:

[(1, 19902736), (2, 9951368), (4, 4975684), (7, 2843248), (8, 2487842), (14, 1421624), (16, 1243921), (28, 710812), (56, 355406), (83, 239792), (112, 177703), (166, 119896), (332, 59948), (581, 34256), (664, 29974), (1162, 17128), (1328, 14987), (2141, 9296), (2324, 8564), (4282, 4648)]