19421990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{859}}^1$

素因数の和:909

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 25160410

約数列:

[1, 2, 5, 7, 10, 14, 17, 19, 34, 35, 38, 70, 85, 95, 119, 133, 170, 190, 238, 266, 323, 595, 646, 665, 859, 1190, 1330, 1615, 1718, 2261, 3230, 4295, 4522, 6013, 8590, 11305, 12026, 14603, 16321, 22610, 29206, 30065, 32642, 60130, 73015, 81605, 102221, 114247, 146030, 163210, 204442, 228494, 277457, 511105, 554914, 571235, 1022210, 1142470, 1387285, 1942199, 2774570, 3884398, 9710995, 19421990]

約数ペア:

[(1, 19421990), (2, 9710995), (5, 3884398), (7, 2774570), (10, 1942199), (14, 1387285), (17, 1142470), (19, 1022210), (34, 571235), (35, 554914), (38, 511105), (70, 277457), (85, 228494), (95, 204442), (119, 163210), (133, 146030), (170, 114247), (190, 102221), (238, 81605), (266, 73015), (323, 60130), (595, 32642), (646, 30065), (665, 29206), (859, 22610), (1190, 16321), (1330, 14603), (1615, 12026), (1718, 11305), (2261, 8590), (3230, 6013), (4295, 4522)]