21026538

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1523}}^1$

素因数の和:1603

約数の個数: 48

約数和(自身を含む): 49926240

約数和(自身を除く): 28899702

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 59, 78, 117, 118, 177, 234, 354, 531, 767, 1062, 1523, 1534, 2301, 3046, 4569, 4602, 6903, 9138, 13707, 13806, 19799, 27414, 39598, 59397, 89857, 118794, 178191, 179714, 269571, 356382, 539142, 808713, 1168141, 1617426, 2336282, 3504423, 7008846, 10513269, 21026538]

約数ペア:

[(1, 21026538), (2, 10513269), (3, 7008846), (6, 3504423), (9, 2336282), (13, 1617426), (18, 1168141), (26, 808713), (39, 539142), (59, 356382), (78, 269571), (117, 179714), (118, 178191), (177, 118794), (234, 89857), (354, 59397), (531, 39598), (767, 27414), (1062, 19799), (1523, 13806), (1534, 13707), (2301, 9138), (3046, 6903), (4569, 4602)]