19287580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2393}}^1$

素因数の和:2446

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 25757924

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, 2393, 4030, 4786, 8060, 9572, 11965, 23930, 31109, 47860, 62218, 74183, 124436, 148366, 155545, 296732, 311090, 370915, 622180, 741830, 964379, 1483660, 1928758, 3857516, 4821895, 9643790, 19287580]

約数ペア:

[(1, 19287580), (2, 9643790), (4, 4821895), (5, 3857516), (10, 1928758), (13, 1483660), (20, 964379), (26, 741830), (31, 622180), (52, 370915), (62, 311090), (65, 296732), (124, 155545), (130, 148366), (155, 124436), (260, 74183), (310, 62218), (403, 47860), (620, 31109), (806, 23930), (1612, 11965), (2015, 9572), (2393, 8060), (4030, 4786)]