19804694

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 39989376

約数和(自身を除く): 20184682

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 37, 74, 91, 119, 173, 182, 221, 238, 259, 346, 442, 481, 518, 629, 962, 1211, 1258, 1547, 2249, 2422, 2941, 3094, 3367, 4403, 4498, 5882, 6401, 6734, 8177, 8806, 12802, 15743, 16354, 20587, 31486, 38233, 41174, 44807, 57239, 76466, 83213, 89614, 108817, 114478, 166426, 217634, 267631, 535262, 582491, 761719, 1164982, 1414621, 1523438, 2829242, 9902347, 19804694]

約数ペア:

[(1, 19804694), (2, 9902347), (7, 2829242), (13, 1523438), (14, 1414621), (17, 1164982), (26, 761719), (34, 582491), (37, 535262), (74, 267631), (91, 217634), (119, 166426), (173, 114478), (182, 108817), (221, 89614), (238, 83213), (259, 76466), (346, 57239), (442, 44807), (481, 41174), (518, 38233), (629, 31486), (962, 20587), (1211, 16354), (1258, 15743), (1547, 12802), (2249, 8806), (2422, 8177), (2941, 6734), (3094, 6401), (3367, 5882), (4403, 4498)]