26799980

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 58078944

約数和(自身を除く): 31278964

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 131, 193, 212, 262, 265, 386, 524, 530, 655, 772, 965, 1060, 1310, 1930, 2620, 3860, 6943, 10229, 13886, 20458, 25283, 27772, 34715, 40916, 50566, 51145, 69430, 101132, 102290, 126415, 138860, 204580, 252830, 505660, 1339999, 2679998, 5359996, 6699995, 13399990, 26799980]

約数ペア:

[(1, 26799980), (2, 13399990), (4, 6699995), (5, 5359996), (10, 2679998), (20, 1339999), (53, 505660), (106, 252830), (131, 204580), (193, 138860), (212, 126415), (262, 102290), (265, 101132), (386, 69430), (524, 51145), (530, 50566), (655, 40916), (772, 34715), (965, 27772), (1060, 25283), (1310, 20458), (1930, 13886), (2620, 10229), (3860, 6943)]