12639880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1294

約数の個数: 64

約数和(自身を含む): 32400000

約数和(自身を除く): 19760120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1249, 1265, 2024, 2498, 2530, 4996, 5060, 6245, 9992, 10120, 12490, 13739, 24980, 27478, 28727, 49960, 54956, 57454, 68695, 109912, 114908, 137390, 143635, 229816, 274780, 287270, 315997, 549560, 574540, 631994, 1149080, 1263988, 1579985, 2527976, 3159970, 6319940, 12639880]

約数ペア:

[(1, 12639880), (2, 6319940), (4, 3159970), (5, 2527976), (8, 1579985), (10, 1263988), (11, 1149080), (20, 631994), (22, 574540), (23, 549560), (40, 315997), (44, 287270), (46, 274780), (55, 229816), (88, 143635), (92, 137390), (110, 114908), (115, 109912), (184, 68695), (220, 57454), (230, 54956), (253, 49960), (440, 28727), (460, 27478), (506, 24980), (920, 13739), (1012, 12490), (1249, 10120), (1265, 9992), (2024, 6245), (2498, 5060), (2530, 4996)]