20009565

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 38880000

約数和(自身を除く): 18870435

約数列:

[1, 3, 5, 9, 15, 19, 27, 29, 45, 57, 87, 95, 135, 145, 171, 261, 269, 285, 435, 513, 551, 783, 807, 855, 1305, 1345, 1653, 2421, 2565, 2755, 3915, 4035, 4959, 5111, 7263, 7801, 8265, 12105, 14877, 15333, 23403, 24795, 25555, 36315, 39005, 45999, 70209, 74385, 76665, 117015, 137997, 148219, 210627, 229995, 351045, 444657, 689985, 741095, 1053135, 1333971, 2223285, 4001913, 6669855, 20009565]

約数ペア:

[(1, 20009565), (3, 6669855), (5, 4001913), (9, 2223285), (15, 1333971), (19, 1053135), (27, 741095), (29, 689985), (45, 444657), (57, 351045), (87, 229995), (95, 210627), (135, 148219), (145, 137997), (171, 117015), (261, 76665), (269, 74385), (285, 70209), (435, 45999), (513, 39005), (551, 36315), (783, 25555), (807, 24795), (855, 23403), (1305, 15333), (1345, 14877), (1653, 12105), (2421, 8265), (2565, 7801), (2755, 7263), (3915, 5111), (4035, 4959)]