18419240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{419}}^1$

素因数の和:594

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 29359960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 314, 419, 628, 785, 838, 1099, 1256, 1570, 1676, 2095, 2198, 2933, 3140, 3352, 4190, 4396, 5495, 5866, 6280, 8380, 8792, 10990, 11732, 14665, 16760, 21980, 23464, 29330, 43960, 58660, 65783, 117320, 131566, 263132, 328915, 460481, 526264, 657830, 920962, 1315660, 1841924, 2302405, 2631320, 3683848, 4604810, 9209620, 18419240]

約数ペア:

[(1, 18419240), (2, 9209620), (4, 4604810), (5, 3683848), (7, 2631320), (8, 2302405), (10, 1841924), (14, 1315660), (20, 920962), (28, 657830), (35, 526264), (40, 460481), (56, 328915), (70, 263132), (140, 131566), (157, 117320), (280, 65783), (314, 58660), (419, 43960), (628, 29330), (785, 23464), (838, 21980), (1099, 16760), (1256, 14665), (1570, 11732), (1676, 10990), (2095, 8792), (2198, 8380), (2933, 6280), (3140, 5866), (3352, 5495), (4190, 4396)]