19994876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 40061952

約数和(自身を除く): 20067076

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 107, 124, 137, 214, 274, 341, 428, 548, 682, 1177, 1364, 1507, 2354, 3014, 3317, 4247, 4708, 6028, 6634, 8494, 13268, 14659, 16988, 29318, 36487, 46717, 58636, 72974, 93434, 145948, 161249, 186868, 322498, 454429, 644996, 908858, 1817716, 4998719, 9997438, 19994876]

約数ペア:

[(1, 19994876), (2, 9997438), (4, 4998719), (11, 1817716), (22, 908858), (31, 644996), (44, 454429), (62, 322498), (107, 186868), (124, 161249), (137, 145948), (214, 93434), (274, 72974), (341, 58636), (428, 46717), (548, 36487), (682, 29318), (1177, 16988), (1364, 14659), (1507, 13268), (2354, 8494), (3014, 6634), (3317, 6028), (4247, 4708)]