18658520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1193}}^1$

素因数の和:1244

約数の個数: 64

約数和(自身を含む): 46422720

約数和(自身を除く): 27764200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1193, 1564, 1955, 2386, 3128, 3910, 4772, 5965, 7820, 9544, 11930, 15640, 20281, 23860, 27439, 40562, 47720, 54878, 81124, 101405, 109756, 137195, 162248, 202810, 219512, 274390, 405620, 466463, 548780, 811240, 932926, 1097560, 1865852, 2332315, 3731704, 4664630, 9329260, 18658520]

約数ペア:

[(1, 18658520), (2, 9329260), (4, 4664630), (5, 3731704), (8, 2332315), (10, 1865852), (17, 1097560), (20, 932926), (23, 811240), (34, 548780), (40, 466463), (46, 405620), (68, 274390), (85, 219512), (92, 202810), (115, 162248), (136, 137195), (170, 109756), (184, 101405), (230, 81124), (340, 54878), (391, 47720), (460, 40562), (680, 27439), (782, 23860), (920, 20281), (1193, 15640), (1564, 11930), (1955, 9544), (2386, 7820), (3128, 5965), (3910, 4772)]