18272020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2267}}^1$

素因数の和:2320

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 24402668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2267, 4030, 4534, 8060, 9068, 11335, 22670, 29471, 45340, 58942, 70277, 117884, 140554, 147355, 281108, 294710, 351385, 589420, 702770, 913601, 1405540, 1827202, 3654404, 4568005, 9136010, 18272020]

約数ペア:

[(1, 18272020), (2, 9136010), (4, 4568005), (5, 3654404), (10, 1827202), (13, 1405540), (20, 913601), (26, 702770), (31, 589420), (52, 351385), (62, 294710), (65, 281108), (124, 147355), (130, 140554), (155, 117884), (260, 70277), (310, 58942), (403, 45340), (620, 29471), (806, 22670), (1612, 11335), (2015, 9068), (2267, 8060), (4030, 4534)]