245398940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{2153}}^1$

素因数の和:2342

約数の個数: 48

約数和(自身を含む): 531951840

約数和(自身を除く): 286552900

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 139, 164, 205, 278, 410, 556, 695, 820, 1390, 2153, 2780, 4306, 5699, 8612, 10765, 11398, 21530, 22796, 28495, 43060, 56990, 88273, 113980, 176546, 299267, 353092, 441365, 598534, 882730, 1197068, 1496335, 1765460, 2992670, 5985340, 12269947, 24539894, 49079788, 61349735, 122699470, 245398940]

約数ペア:

[(1, 245398940), (2, 122699470), (4, 61349735), (5, 49079788), (10, 24539894), (20, 12269947), (41, 5985340), (82, 2992670), (139, 1765460), (164, 1496335), (205, 1197068), (278, 882730), (410, 598534), (556, 441365), (695, 353092), (820, 299267), (1390, 176546), (2153, 113980), (2780, 88273), (4306, 56990), (5699, 43060), (8612, 28495), (10765, 22796), (11398, 21530)]