21903216

素因数分解:

$2^4\times 3^1\times {\mathrm{71}}^1\times {\mathrm{6427}}^1$

素因数の和:6509

約数の個数: 40

約数和(自身を含む): 57389184

約数和(自身を除く): 35485968

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 71, 142, 213, 284, 426, 568, 852, 1136, 1704, 3408, 6427, 12854, 19281, 25708, 38562, 51416, 77124, 102832, 154248, 308496, 456317, 912634, 1368951, 1825268, 2737902, 3650536, 5475804, 7301072, 10951608, 21903216]

約数ペア:

[(1, 21903216), (2, 10951608), (3, 7301072), (4, 5475804), (6, 3650536), (8, 2737902), (12, 1825268), (16, 1368951), (24, 912634), (48, 456317), (71, 308496), (142, 154248), (213, 102832), (284, 77124), (426, 51416), (568, 38562), (852, 25708), (1136, 19281), (1704, 12854), (3408, 6427)]