20126816

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 21241504

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 89, 148, 178, 191, 296, 356, 382, 592, 712, 764, 1184, 1424, 1528, 2848, 3056, 3293, 6112, 6586, 7067, 13172, 14134, 16999, 26344, 28268, 33998, 52688, 56536, 67996, 105376, 113072, 135992, 226144, 271984, 543968, 628963, 1257926, 2515852, 5031704, 10063408, 20126816]

約数ペア:

[(1, 20126816), (2, 10063408), (4, 5031704), (8, 2515852), (16, 1257926), (32, 628963), (37, 543968), (74, 271984), (89, 226144), (148, 135992), (178, 113072), (191, 105376), (296, 67996), (356, 56536), (382, 52688), (592, 33998), (712, 28268), (764, 26344), (1184, 16999), (1424, 14134), (1528, 13172), (2848, 7067), (3056, 6586), (3293, 6112)]