21337760

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7019}}^1$

素因数の和:7053

約数の個数: 48

約数和(自身を含む): 53071200

約数和(自身を除く): 31733440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 7019, 14038, 28076, 35095, 56152, 70190, 112304, 133361, 140380, 224608, 266722, 280760, 533444, 561520, 666805, 1066888, 1123040, 1333610, 2133776, 2667220, 4267552, 5334440, 10668880, 21337760]

約数ペア:

[(1, 21337760), (2, 10668880), (4, 5334440), (5, 4267552), (8, 2667220), (10, 2133776), (16, 1333610), (19, 1123040), (20, 1066888), (32, 666805), (38, 561520), (40, 533444), (76, 280760), (80, 266722), (95, 224608), (152, 140380), (160, 133361), (190, 112304), (304, 70190), (380, 56152), (608, 35095), (760, 28076), (1520, 14038), (3040, 7019)]