257688895

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 349341696

約数和(自身を除く): 91652801

約数列:

[1, 5, 23, 31, 41, 43, 115, 155, 205, 215, 713, 943, 989, 1271, 1333, 1681, 1763, 3565, 4715, 4945, 6355, 6665, 8405, 8815, 29233, 30659, 38663, 40549, 52111, 54653, 72283, 146165, 153295, 193315, 202745, 260555, 273265, 361415, 1198553, 1257019, 1662509, 2240773, 5992765, 6285095, 8312545, 11203865, 51537779, 257688895]

約数ペア:

[(1, 257688895), (5, 51537779), (23, 11203865), (31, 8312545), (41, 6285095), (43, 5992765), (115, 2240773), (155, 1662509), (205, 1257019), (215, 1198553), (713, 361415), (943, 273265), (989, 260555), (1271, 202745), (1333, 193315), (1681, 153295), (1763, 146165), (3565, 72283), (4715, 54653), (4945, 52111), (6355, 40549), (6665, 38663), (8405, 30659), (8815, 29233)]