21392708

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19975612

約数列:

[1, 2, 4, 19, 38, 47, 53, 76, 94, 106, 113, 188, 212, 226, 452, 893, 1007, 1786, 2014, 2147, 2491, 3572, 4028, 4294, 4982, 5311, 5989, 8588, 9964, 10622, 11978, 21244, 23956, 47329, 94658, 100909, 113791, 189316, 201818, 227582, 281483, 403636, 455164, 562966, 1125932, 5348177, 10696354, 21392708]

約数ペア:

[(1, 21392708), (2, 10696354), (4, 5348177), (19, 1125932), (38, 562966), (47, 455164), (53, 403636), (76, 281483), (94, 227582), (106, 201818), (113, 189316), (188, 113791), (212, 100909), (226, 94658), (452, 47329), (893, 23956), (1007, 21244), (1786, 11978), (2014, 10622), (2147, 9964), (2491, 8588), (3572, 5989), (4028, 5311), (4294, 4982)]